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[8-9 Troubleshooting Problems with Major Components on BC Controller ]

30

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chapter 8

HWE18220_GB

8 Troubleshooting Based on Observed Symptoms

8-9

Troubleshooting Problems with Major Components on BC
Controller

8-9-1

Pressure Sensor

Troubleshooting flow chart for pressure sensor

Check whether the pressure sensor or the
connectors of P1 and P3 are connected, properly

All the compressors of the outdoor units to
which the BC controller is connected are stopped.

Check P1 and P3 on the self-diagnosis
LED, and check that the detected
pressure is 0.098MPa [14psi] or more.

On the self-diagnosis monitor, measure
Outdoor high-pressure 63HS1
Outdoor low-pressure 63LS
BC controller pressure P1 (liquid side)
and P3 (intermediate part)
Check whether the result is
63HS1 P1 P3 63LS

START

Repair the fault.

Fix the relation between
the refrigerant piping
and the transmission line.

Fix the relation between the
refrigerant piping and the
transmission line.

Replace the pressure sensor.

Replace the board.

Restore contact failure.

Check whether the contact of the pressure
sensor connector in trouble is not faulty.

OK?

OK?

Check that the difference between each
detected pressure is 0.098MPa [14psi] or less.

OK?

Both the board and the pressure sensor are normal.

OK?

Is Pd P1 P3 Ps?

Remove the pressure sensor connector
from the board, and check the pressure.

OK?

OK?

Check whether the refrigerant pipe and the
transmission line are connected correctly
between the outdoor unit and the BC controller.

OK?

Operating at the moment?

Check whether the refrigerant pipe
and the transmission line are
connected correctly between the indoor
unit and the BC controller.

OK?

YES

Note 2

Note 1

NO

YES

YES

YES

Note 3

Note 4

NO

NO

NO

NO

YES

NO

NO

YES

YES

YES

NO

NO

YES

NO

YES

NO

NO

10 minutes or longer after

the operation stops?

Pressure 0MPa [0psi]

6MPa [870psi] pressure

or more is displayed.

Replace the failed sensor with a
normal sensor to see if the correct
pressure measurement is displayed.

Short-circuit between connecter pins #2 and #3
on the circuit board, and check the pressure.

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Summary of Contents for PURY-HP144

Page 1: ......

Page 2: ...he performance of the unit or cause certain components of the unit to corrode which can result in refrigerant leakage wa ter leakage injury electric shock malfunc tions smoke or fire Do not try to defeat the safety features of the unit or make unauthorized setting changes Forcing the unit to operate the unit by de feating the safety features of the devices such as the pressure switch or the temper...

Page 3: ...ed for use with food animals plants precision instruments or art work To reduce the risk of water leakage and mal functions do not turn off the power immedi ately after stopping operation Leave the unit turned on for at least 5 minutes before turning off the power Do not install the unit over things that are vulnerable to water damage from condensa tion dripping To reduce the risk of injury electr...

Page 4: ...rigerant leakage and resultant oxygen starvation An installation of a refrigerant gas detector is recommended Any additional parts must be installed by the dealer or qualified personnel Only use the parts specified by Mitsubishi Electric Installation by unauthorized personnel or use of unauthorized parts or accessories may result in water leakage electric shock or fire Take appropriate safety meas...

Page 5: ...igerant leakage and resultant oxygen deprivation use the flare nut that is supplied with the unit or its equiv alent that meets applicable standards To reduce the risk of damage to the unit and resultant refrigerant leakage and oxy gen deprivation tighten flare nuts to a spec ified torque To reduce the risk of oxygen deprivation and gas poisoning check for gas leakage and keep fire sources away In...

Page 6: ...ce the risk of current leakage over heating smoke or fire use properly rated cables with adequate current carrying ca pacity Proper grounding must be provided by a li censed electrician Do not connect the grounding wire to a gas pipe water pipe lightning rod or telephone wire Improper grounding may result in electric shock smoke fire or malfunction due to electrical noise interference To reduce th...

Page 7: ...y cause the refrigerant oil in the new system to deteriorate or damage the compressor To reduce the risk of the vacuum pump oil backflowing into the refrigerant cycle and causing the refrigerant oil to deteriorate use a vacuum pump with a check valve Have a set of tools for exclusive use with R410A Consult your nearest Mitsubishi Electric Dealer Keep dust dirt and water off charging hose and flare...

Page 8: ...rged Refrigerant over charge or undercharge may result in perfor mance drop or abnormal stop of operation To reduce the risk of power capacity short age always use a dedicated power supply circuit To reduce the risk of both the breaker on the product side and the upstream breaker from tripping and causing problems split the power supply system or provide protection coordination between the earth l...

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Page 10: ...t Circuit Diagrams 11 3 7 Functions of the Major Components of BC Controller 13 Chapter 4 Electrical Components and Wiring Diagrams 4 1 Outdoor Unit Circuit Board Arrangement 1 4 2 Outdoor Unit Circuit Board Components 4 4 3 Outdoor Unit Electrical Wiring Diagrams 14 4 4 Transmission Booster Electrical Wiring Diagrams 16 4 5 BC Controller Circuit Board Arrangement 17 4 6 BC Controller Circuit Boar...

Page 11: ... 24 8 9 Troubleshooting Problems with Major Components on BC Controller 30 8 10 Troubleshooting Inverter Problems 44 8 11 Control Circuit 57 8 12 Measures for Refrigerant Leakage 63 8 13 Parts Replacement Instructions 65 8 14 BC Controller Maintenance Instructions 97 8 15 Troubleshooting Problems Using the LED Status Indicators on the Outdoor Unit 100 Chapter 9 USB Function 9 1 Service Overview 1 ...

Page 12: ... Oil 3 1 2 1 Piping Materials 3 1 2 2 Storage of Piping Materials 4 1 2 3 Pipe Processing 4 1 2 4 Characteristics of the New and Conventional Refrigerants 5 1 2 5 Refrigerant Oil 6 1 3 Working with Refrigerant Piping 7 1 3 1 Pipe Brazing 7 1 3 2 Air Tightness Test 8 1 3 3 Vacuum Drying 9 1 3 4 Refrigerant Charging 11 1 4 Precautions for Wiring 12 1 5 Cautionary notes on installation environment an...

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Page 14: ...d or replaced Use refrigerant pipes made of phosphorus deoxidized copper Keep the inner and outer surfaces of the pipes clean and free of such contaminants as sulfur oxides dust dirt shaving particles oil and water These types of contaminants inside the refrigerant pipes may cause the refrigerant oil to deteriorate 6 If there is a leak of gaseous refrigerant and the remaining refrigerant is expose...

Page 15: ...ging The refrigerant type is indicated The cylinder is pink Charging Port on the Refrigerant Cylinder Refrigerant charging The charge port diameter is larger than that of the current port Flare Nut Connection of the unit with the pipes Use Type 2 Flare nuts Tools Materials Use Notes Gas Leak Detector Gas leak detection The ones for use with HFC refrigerant may be used Vacuum Pump Vacuum drying May...

Page 16: ...ss Select piping materials that meet the requirements set forth in ASTM B280 4 Thickness and refrigerant type indicated on the piping materials Ask the pipe manufacturer for the symbols indicated on the piping material for new refrigerant R410A 5 Flare processing Select piping materials that meet the requirements set forth in ASTM 6 Flare nut Select piping materials that meet the requirements set ...

Page 17: ...lbow pipes and T joints in plastic bags The new refrigerator oil is 10 times as hygroscopic as the conventional refrigerating machine oil such as Suniso and if not handled with care could easily introduce moisture into the system Keep moisture out of the pipes for it will cause the oil to deteriorate and cause a compressor failure 1 2 3 Pipe Processing Use a small amount of ester oil ether oil or ...

Page 18: ... out it may be replenished 3 Pressure characteristics The pressure in the system using R410A is 1 6 times as great as that in the system using R22 New Refrigerant HFC type Conventional Refriger ant HCFC type R410A R407C R22 R32 R125 R32 R125 R134a R22 Composition wt 50 50 23 25 52 100 Type of Refrigerant Pseudo azeotropic Refrigerant Non azeotropic Refrigerant Single Refrigerant Chloride Not inclu...

Page 19: ...rigerating machine oil on the refrigeration cycle Refrigerant Refrigerating machine oil R22 Mineral oil R407C Ester oil R410A Ester oil 1 Contaminants is defined as moisture air processing oil dust dirt wrong types of refrigerant and refrigerating machine oil Cause Symptoms Effects on the refrigerant cycle Water infiltration Frozen expansion valve and capillary tubes Clogged expansion valve and ca...

Page 20: ...BCuP 3 that requires no flux when brazing between copper pipes or between a copper pipe and copper coupling If installed refrigerant pipes are not immediately connected to the equipment then braze and seal both ends 2 Reasons The new refrigerating machine oil is 10 times as hygroscopic as the conventional oil and is more likely to cause unit failure if water infiltrates into the system Flux genera...

Page 21: ...ature variations into account Refrigerant R410A must be charged in its liquid state vs gaseous state 2 Reasons Oxygen if used for an air tightness test poses a risk of explosion Only use nitrogen to check air tightness Refrigerant R410A must be charged in its liquid state If gaseous refrigerant in the cylinder is drawn out first the composition of the remaining refrigerant in the cylinder will cha...

Page 22: ...itional 1 hour A thorough vacuum drying re moves moisture in the pipes Verify that the vacuum degree has not risen by more than 1Torr 130Pa 1hour after evacuation A rise by less than 1Torr 130Pa is acceptable If the vacuum is lost by more than 1Torr 130Pa conduct evacuation following the instructions in section 6 Special vacuum drying 5 Procedures for stopping vacuum pump To prevent the reverse fl...

Page 23: ...500 microns for a minimum of 1 hour Conduct a rise test for a minimum of 30 minutes 8 Notes To evacuate air from the entire system Applying a vacuum through the check joints at the refrigerant service valve on the high and low pressure sides BV1 and 2 is not enough to attain the desired vacuum pressure Be sure to apply a vacuum through the check joints at the refrigerant service valve on the high ...

Page 24: ... of the remaining refrigerant will change and be come unsuitable for use 2 Notes When using a cylinder with a siphon refrigerant is charged in the liquid state without the need for turning it upside down Check the type of the cylinder on the label before use If the refrigerant leaks out it may be replenished The entire refrigerant does not need to be replaced Charge refrigerant in the liquid state...

Page 25: ...stopped It is energized to evaporate the liquid refrigerant that has accumulated in the compressor Before connecting wiring to TB7 check that the voltage has dropped below 20 VDC When a system controller is connected to the centralized control transmission cable to which power is supplied from the out door unit power jumper on the outdoor unit is connected to CN40 be aware that power can be suppli...

Page 26: ...fter tightening the screw mark a line through the screw head washer and terminals with a permanent marker Example Poor contact caused by loose screws may result in overheating and fire Continued use of the damaged circuit board may cause overheating and fire Daisy chain Power supply terminal block indoor outdoor transmission line terminal block and centralized controller transmission line Mark a l...

Page 27: ...ze and minimize the exposure to salt water mist 2 Avoid installing a sun shade over the outdoor unit so that rain will wash away salt deposits off the unit 3 Install the unit horizontally to ensure proper water drainage from the base of the unit Accumulation of water in the base of the outdoor unit will significantly accelerate corrosion 4 Periodically wash salt deposits off the unit especially wh...

Page 28: ...dress Startup 13 2 7 2 Single Refrigerant System with Two or More LOSSNAY Units 15 2 7 3 Grouped Operation of Units in Separate Refrigerant Circuits 17 2 7 4 System with a Connection of System Controller to Centralized Control Transmission Line 19 2 7 5 System with a Connection of System Controller to Indoor Outdoor Transmission Line 21 2 7 6 System with Multiple BC Controllers 23 2 8 Example Syst...

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Page 30: ...ndoor units will not be able to perform at the rated capacity when they are operated simultaneously Select a combination of units so that the total capacity of the connected indoor units is at or below the capacity of the outdoor unit whenever possible 3 Standard units and high COP units cannot be used in combination Outdoor units Composing units Maximum total ca pacity of connect able indoor unit...

Page 31: ...tage of the main circuit capacitor has decreased to 20 V DC or less If the outdoor fan rotates due to a strong wind there is a risk of an electric shock because the main circuit capacitor will be charged Refer to the wiring nameplate for details When the service work is finished reconnect the connector CNINV on the fan board and the connector CNFAN on the INV board or the connector CNFAN2 on the c...

Page 32: ...parenthesis 5 When connecting PAR 30MAAU or MA Simple remote controller use sheathed cables with a minimum thickness of 0 3 mm2 Cable type Facility type All facility types Type Shielded cable CVVS CPEVS MVVS Number of cores 2 core cable Cable size Larger than 1 25mm2 AWG16 Maximum transmission line dis tance between the outdoor unit and the farthest indoor unit 200 m 656ft max Maximum transmission...

Page 33: ...two or more units have the same capacity in the order of address from small to large 3 Turn off the power to all the outdoor units in the same refrigerant circuit 4 When setting the switch SW4 of the control board set it with the outdoor unit power on Refer to the following page s 5 1 1 Outdoor Unit Switch Functions and Factory Settings Units on which to set the switches Symbol Units to which the ...

Page 34: ... with a sub BC controller make the set tings for the indoor units in the following order i Indoor unit to be connected to the main BC controller ii Indoor unit to be connected to sub BC controller 1 iii Indoor unit to be connected to sub BC controller 2 Make the settings for the indoor units in the way that the for mula i ii iii is true 00 M NET adapter M NET con trol interface Free Plan adapter L...

Page 35: ...gn an arbitrary but unique address within the range listed on the left to each unit 202 Central controller AE 200 AG 150A GB 50ADA G B 50A TR SC 0 201 to 250 Assign an arbitrary but unique address within the range listed on the left to each unit The address must be set to 0 to con trol the K control unit 000 LM adapter SC 201 to 250 Assign an arbitrary but unique address within the range listed on...

Page 36: ...ion when operation is restored after a power failure 2 Not applicable to units with a built in drain pump or humidifier 3 Models with a built in drain pump cannot be turned on off by the plug individually All the units in the same refrigerant cir cuits will be turned on or off by the plug 4 Requires that the dipswitch settings for all the units in the group be made 5 To control the external input ...

Page 37: ...fan will not go into operation when the contact receives signal input 8 When using a panel heater change the setting using SW4 When using a base heater error output will not be available Type Usage Function Terminal to be used 1 Option Input Prohibiting cooling heating operation thermo OFF by an external input to the outdoor unit It can be used as the DEMAND control device for each system DEMAND l...

Page 38: ...t 0 1A Minimum applicable load 1mA at DC Relay circuit 3 CN3N 2 Optional part PAC SC36NA E or field supply Preparations in the field OFF Cooling ON Heating Normal Y OFF ON X Contact rating voltage DC15V Contact rating current 0 1A Minimum applicable load 1mA at DC X Cooling Heating Y Validity Invalidity of X X Y Relay CN3N X Y Relay circuit Outdoor unit control board Maximum cable length is 10m 1 ...

Page 39: ...t PAC SC36NA E or field supply X Energy saving mode command X Relay Contact rating voltage DC15V Contact rating current 0 1A Minimum applicable load 1mA at DC X CN3K Preparations in the field Maximum cable length is 10m Outdoor unit control board 3 2 1 Relay circuit External input adapter 2 ...

Page 40: ...acity 5 Notes on using demand control in combination with the low noise mode To enable the low noise mode it is necessary to short circuit 1 2 pin of CN3D on the outdoor unit whose SW6 8 is set to OFF When SW6 8 is set to ON on all outdoor units the following operations cannot be performed Performing 4 step demand in combination with the low noise operation in a single outdoor unit system Performi...

Page 41: ...f units in different refrigerant systems NO Manual address setup 4 Single refrigerant system With connection to transmission line for centralized control Manual address setup 5 Single refrigerant system With connection to indoor outdoor transmission line Manual address setup 6 Single refrigerant system With connection to transmission line for centralized control Manual address setup Connection of ...

Page 42: ... connecting two or more LOSSNAY units to a system refer to the following page s 2 7 2 Sin gle Refrigerant System with Two or More LOSSNAY Units 3 Maximum allowable length 1 Indoor outdoor transmission line Maximum distance 1 25mm2 AWG16 or larger L1 L2 L3 L4 L5 200m 656ft L1 L2 L3 L11 L12 L13 200m 656ft 2 Transmission line for centralized control No connection is required 3 MA remote controller wi...

Page 43: ...ntroller Non polarized two wire When performing a group operation of indoor units that have different functions Automatic indoor outdoor ad dresssetup is not available 4 LOSSNAY connection Connect terminals M1 and M2 on the terminal block TB5 on the indoor unit IC to the appropriate ter minals on the terminal block TB5 on LOSSNAY LC Non polarized two wire Interlock operation setting with all the i...

Page 44: ...mum allowable length 1 Indoor outdoor transmission line Same as 2 7 1 2 Transmission line for centralized control No connection is required 3 MA remote controller wiring Same as 2 7 1 L3 BC 53 OC 51 TB7 S TB3 TB02 S IC TB5 S TB15 1 2 01 IC TB5 S TB15 1 2 02 A1 B2 MA A1 B2 MA LC TB5 S 05 IC TB5 S 1 2 TB15 IC TB5 S TB15 1 2 04 03 LC TB5 S 06 A1 B2 MA If the BC address overlaps any of the addresses t...

Page 45: ... or controller Address setting range Setting method Notes Fac tory set ting 1 Indoor unit Main unit IC 01 to 50 Assign the smallest address to the main unit in the group In a system with a sub BC controller make the settings for the indoor units in the following order i Indoor unit to be connected to the main BC controller ii Indoor unit to be connected to sub BC controller 1 iii Indoor unit to be...

Page 46: ...6 or larger L11 L12 200m 656ft L21 L22 200m 656ft 2 Transmission line for centralized control L31 L21 200m 656ft 3 MA remote controller wiring Same as 2 7 1 4 Maximum line distance via outdoor unit 1 25mm2 AWG16 or larger L12 L11 L31 L22 L21 1000 m 3280ft 500 m 1640ft 1 1 If a given system includes one or more unit or remote controller that does not support the maximum allow able cable distance of...

Page 47: ...ignated as OC and OS They are designated as OC and OS in the descending order of capacity ascending order of address if the capacities are the same Proce dures Unit or controller Address setting range Setting method Notes Fac tory set ting 1 Indoor unit Main unit IC 01 to 50 Assign the smallest address to the main unit in the group In a system with a sub BC controller make the settings for the ind...

Page 48: ...tralized control leave the power jumper connector on CN41 as it is factory setting 3 Maximum allowable length 1 Indoor outdoor transmission line Same as 2 7 3 2 Transmission line for centralized control L31 L32 L21 200m 656ft 3 MA remote controller wiring Same as 2 7 1 4 Maximum line distance via outdoor unit 1 25mm2 AWG16 or larger L32 L31 L12 L11 1000 m 3280ft 500 m 1640ft 1 L32 L22 L21 1000 m 3...

Page 49: ...ock set ting from the remote controller is required if the ON OFF re mote controller alone or the LM adapter alone is connected 5 Switch setting Address setting is required as follows 5 Address setting method The outdoor units in the same refrigerant circuit are automatically designated as OC and OS They are designated as OC and OS in the descending order of capacity ascending order of address if ...

Page 50: ...required for a given system 3 Maximum allowable length 1 Indoor outdoor transmission line Maximum distance 1 25mm2 AWG16 or larger L11 L12 200m 656ft L21 L22 200m 656ft L25 200m 656ft 2 Transmission line for centralized control L31 L21 200m 656ft 3 MA remote controller wiring Same as 2 7 1 4 Maximum line distance via outdoor unit 1 25mm2 AWG16 or larger L25 L31 L12 L11 1000 m 3280ft 500 m 1640ft 1...

Page 51: ... the terminal block for indoor outdoor transmission line TB5 on LOSSNAY LC Non po larized two wire Indoor units must be interlocked with the LOSSNAY unit using the system controller Refer to the operation manual for the system controller for the setting method Interlock setting from the remote controller is required if the ON OFF remote controller alone is con nected 5 Switch setting Address setti...

Page 52: ...nit 1 25mm2 AWG16 or larger L32 L31 L12 L11 1000 m 3280ft 500 m 1640ft 1 L32 L22 L21 1000 m 3280ft 500 m 1640ft 1 L12 L11 L31 L22 L21 1000 m 3280ft 500 m 1640ft 1 1 If a given system includes one or more unit or remote controller that does not support the maximum allow able cable distance of 1000 m 3280 ft the maximum allowable cable distance in the system will be 500 m 1640 ft Refer to the latest...

Page 53: ...m CN41 to CN40 on only one of the outdoor units When connecting a system controller set the centralized control switch SW5 1 on the control board of all indoor units to ON b If TB7 s on the outdoor units in the same refrigerant cir cuit are not daisy chained connect the transmission line for the central control system to TB7 of the OC Note a To maintain the central control even during an OC fail u...

Page 54: ... unit address 1 main unit address 2 main unit address 3 etc 2 LOSSNAY LC 01 to 50 Assign an arbitrary but unique address to each of these units after assigning an address to all indoor units None of these addresses may overlap any of the indoor unit ad dresses 00 3 MA remote control ler Main re mote controller MA No set tings re quired Make the same indoor unit group settings with the system contr...

Page 55: ...e for centralized control Same as 2 7 4 3 ME remote controller wiring Maximum overall line length 0 3 to 1 25mm2 AWG22 to 16 m1 10m 32ft m2 m3 10m 32ft If the standard supplied cable must be extended use a cable with a diameter of 1 25mm2 AWG16 The section of the cable that exceeds 10m 32ft must be included in the maximum indoor outdoor transmission line distance described in 1 When connected to t...

Page 56: ...ue When using additional BC controllers 3 to 11 BC controllers make the same set tings Port number setting is required To perform a group op eration of indoor units that have different func tions set the indoor unit in the group with the greatest number of functions as the main unit 00 Sub unit Assign sequential numbers starting with the address of the main unit in the same group 1 Main unit addre...

Page 57: ...tions for each outdoor unit The above table shows the number of transmission boosters that is required by the system with three BC controllers For each BC controller added or subtracted subtract or add two indoor units Refer to the DATABOOK for further information about how many booster units are required for a given system 10 When a power supply unit is connected to the transmis sion line for cen...

Page 58: ... or larger Same as 2 7 4 4 Wiring method 1 Indoor outdoor transmission line Same as 2 7 2 Shielded cable connection Same as 2 7 2 2 Transmission line for centralized control Same as 2 7 4 Shielded cable connection Same as 2 7 4 3 MA remote controller wiring When 2 remote controllers are connected to the system Group operation of indoor units Same as 2 7 1 4 ME remote controller wiring When 2 remot...

Page 59: ...it IC 01 to 50 Assign the smallest address to the main unit in the group Assign an address higher than those of the indoor units that are connected to the MA remote controller Make the initial settings for the indoor unit group settings via the system con troller To perform a group operation of indoor units that have different functions des ignate the indoor unit in the group with the greatest num...

Page 60: ...FY P24NMAU E3 its capacity is P24 Note8 Total down stream Indoor capacity is the summary of the model size of Indoors down stream For example PEFY P24NMAU E3 PEFY P06NMAU E3 Total Indoor capacity P24 P06 P30 Note9 To connect the BC controller to the main pipe use the reducer CMY R301S G CMY R302S G1 or CMY R304S G1 Note10 Install the pipes correctly referring to the section titled Outdoor Twinning...

Page 61: ...pactiy is described as its model size For example PEFY P24NMAU E3 its capacity is P24 Note9 Total down stream Indoor capacity is the summary of the model size of Indoors down stream For example PEFY P24NMAU E3 PEFY P06NMAU E3 Total Indoor capacity P24 P06 P30 Note10 To connect the BC controller to the main pipe use the reducer CMY R301S G CMY R302S G1 or CMY R304S G1 Note11 To connect the sub BC c...

Page 62: ...t P120 CMY R201S G 9 When the piping length or the vertical separation exceeds the limit specified in Fig 2 connect a sub BC to the system The restriction for a system with a sub BC connection is shown in Fig 3 When a given system configuration falls within the shaded area in Fig 3 increase the size of the high pressure pipe and the liquid pipe between the main BC and sub BC by one size The maximu...

Page 63: ...EFY P06NMAU E3 Total Indoor capacity P24 P06 P30 Note10 To connect the BC controller to the main pipe use the reducer CMY R301S G CMY R302S G1 or CMY R304S G1 Note11 To connect the sub BC controller to the main BC controller use the reducer CMY R303S G1 CMY R305S G1 or CMY R306S G Note12 Install the pipes correctly referring to the section titled Outdoor Twinning Kit Note13 Up to 11 sub BC control...

Page 64: ...1 CMY R205S G Total down stream Indoor capacity Joint CMY R204S G P217 P234 P235 P360 P121 P216 CMY R203S G CMY R202S G P120 CMY R201S G Piping length and height between IU and BC controller Fig 2 Fig 3 9 When the piping length or the vertical separation exceeds the limit specified in Fig 2 connect a sub BC to the system The restriction for a system with a sub BC connection is shown in Fig 3 When ...

Page 65: ... pipe length m PURY HP240TSNU A PURY HP240YSNU A 200 300 400 500 600 700 800 900 1000 10 20 30 40 50 60 70 80 90 100 110 Distance between outdoor unit and BC controller m Total extended pipe length m PURY HP192TSNU A PURY HP192YSNU A 200 300 400 500 600 700 800 900 1000 10 20 30 40 50 60 70 80 90 100 110 Distance between outdoor unit and BC controller m Total extended pipe length m 200 300 400 500...

Page 66: ...nit and BC controller ft Total extended pipe length ft Distance between outdoor unit and BC controller ft Total extended pipe length ft Distance between outdoor unit and BC controller ft Total extended pipe length ft Distance between outdoor unit and BC controller ft Total extended pipe length ft 0 500 1000 1500 2000 30 90 150 210 270 330 0 500 1000 1500 2500 2000 30 90 150 210 270 330 0 500 1000 ...

Page 67: ... High pressure pipe Low pressure pipe HP72 ø15 88 5 8 ø19 05 3 4 HP96 ø19 05 3 4 ø22 2 7 8 HP120 ø28 58 1 1 8 HP144 ø22 2 7 8 HP192 HP240 ø22 2 7 8 1 ø34 93 1 3 8 Unit mm inch Indoor unit Liquid pipe Gas pipe P05 P18 ø6 35 1 4 ø12 7 1 2 P24 P54 ø9 52 3 8 ø15 88 5 8 P72 ø9 52 3 8 ø19 05 3 4 P96 ø9 52 3 8 ø22 2 7 8 Unit mm inch Total capacity of downstream indoor units High pressure gas pipe Low pre...

Page 68: ...ed connection Indoor unit side ø9 52 3 8 Brazed connection ø15 88 5 8 Brazed connection Indoor Indoor Indoor Indoor Indoor Indoor BC controller Maximum of 3 units per port Total capacity of P54 or below Note 1 Branch joint Model name CMY Y102S G2 Optional accessory Junction pipe kit Model name CMY R160 J1 Optional accessory P05 P54 models P05 P54 models P72 P96 models A B To outdoor unit Connectio...

Page 69: ...pacity of indoor units Liquid pipe Gas pipe P54 or below ø9 52 3 8 ø15 88 5 8 P55 P72 ø9 52 3 8 ø19 05 3 4 P73 P96 ø9 52 3 8 ø22 2 7 8 Be sure to have pipe expansion of indoor unit connecting port by cutting the piping at the cutting point which depends on the indoor unit capacity Indoor unit connecting port Cutting point ø9 52 Liquid side or ø15 88 Gas side Indoor unit model bigger than P50 Cutti...

Page 70: ...p and thermo off The indoor units connected to the same port must be set to operate in the same mode Set them in the same group to make them run stop in the same mode all together For other options enable the thermo setting on the remote controller or set the common thermostat optional to run stop the units in the same mode based on a representative temperature Restriction on installing the 2 Bran...

Page 71: ...eam indoor units using the table below as a reference Unit mm inch Total capacity of indoor units Liquid pipe Gas pipe P54 or below ø9 52 3 8 ø15 88 5 8 P55 P72 ø9 52 3 8 ø19 05 3 4 P73 P96 ø9 52 3 8 ø22 2 7 8 Be sure to have pipe expansion of indoor unit connecting port by cutting the piping at the cutting point which depends on the indoor unit capacity Indoor unit connecting port Cutting point ø...

Page 72: ...ch Outdoor units High pressure side Low pressure pipe Outdoor unit side HP72 ø15 88 5 8 Brazed connection ø19 05 3 4 Brazed connection HP96 ø19 05 3 4 Brazed connection ø22 2 7 8 Brazed connection HP120 ø28 58 1 1 8 Brazed connection HP144 ø22 2 7 8 Brazed connection HP192 HP240 ø22 2 7 8 1 Brazed connection ø34 93 1 3 8 Brazed connection Indoor unit side ø9 52 3 8 Brazed connection ø15 88 5 8 Bra...

Page 73: ...door units connected to the same port must be set to operate in the same mode Set them in the same group to make them run stop in the same mode all together For other options enable the thermo setting on the remote controller or set the common thermostat optional to run stop the units in the same mode based on a representative temperature Be sure to have pipe expansion of indoor unit connecting po...

Page 74: ...its Liquid pipe Gas pipe P54 or below ø9 52 3 8 ø15 88 5 8 P55 P72 ø9 52 3 8 ø19 05 3 4 P73 P96 ø9 52 3 8 ø22 2 7 8 Unit mm inch Operation Pipe sections Total capacity of indoor units connected to down stream BC controller High pressure side gas Low pressure side gas Liquid pipe side Main BC controller side P72 ø15 88 5 8 Brazed connection ø19 05 3 4 Brazed connection ø9 52 3 8 Brazed connection P...

Page 75: ...r Slope of the twinning pipes are at an angle within 15 to the horizontal plane The angle of the twinning pipe is within 15 against the horizontal plane 2 Use the attached pipe to braze the port opening of the distributer 3 Pipe diameter is indicated by inside diameter 4 Only use the Twinning pipe by Mitsubishi optional parts Note 1 Reference the attitude angle of the twinning pipe in the figure b...

Page 76: ... Unit 1 3 1 2 Outdoor Unit Refrigerant Circuits 2 3 2 Outdoor Unit Refrigerant Circuit Diagrams 3 3 3 Functions of the Major Components of Outdoor Unit 4 3 4 Functions of the Major Components of Indoor Unit 7 3 5 External Appearance and Refrigerant Circuit Components of BC Controller 8 3 6 BC Controller Refrigerant Circuit Diagrams 11 3 7 Functions of the Major Components of BC Controller 13 ...

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Page 78: ...mponents of Outdoor Unit 3 1 1 External Appearance of Outdoor Unit PURY HP72 HP96 HP120T Y NU A Fan guard Fan guard Fin guard Fin guard Control box Control box Heat exchanger Heat exchanger Front panel Front panel Front panel Front panel Rear panel Rear panel Fan Fan Internal panel Internal panel Drain pan Drain pan Internal panel Internal panel Panel heater Panel heater Side panel Side panel Side...

Page 79: ...CV2a Check valve CV3a Check valve CV6a Check valve CV5a Linear expansion valve LEV2d Solenoid valve SV1a Linear expansion valve LEV9 Linear expansion valve LEV4 Linear expansion valve LEV2a Linear expansion valve LEV2b Solenoid valve SV2 High pressure side valve BV2 Low pressure side valve BV1 Oil separator Compressor Compressor cover Low pressure sensor 63LS High pressure sensor 63HS1 High pressu...

Page 80: ... Circuits 3 2 Outdoor Unit Refrigerant Circuit Diagrams 1 PURY HP72 HP120T YNU A SV1a Gas liquid separator 63H1 ST3 ST6 TH4 21S4b CP1 CJ1 63LS ST1 BV2 BV1 ACC O S 21S4a LEV2a LEV2b SV2 HEX LEV2d CV2a CV3a CV5a CV6a TH5 LEV9 Hex for INV cooling ST18 CJ2 63HS1 ST7 TH3 TH7 CHECK VALVE BLOCK Comp TH15 LEV4 Orifice Rear Front ...

Page 81: ...des high pressure pro tection 4 15MPa 601psi OFF set ting Power supply trans former Transformer YNU only Decreases the power supply volt age 460V supplied to the circuit board Primary rated voltage 460V 50 60Hz Secondary rated voltage 229V No load voltage Thermis tor TH4 Discharge temperature 1 Detects discharge air temper ature 2 Provides high pressure pro tection Degrees Celsius Resistance check...

Page 82: ...art up and stopping and capacity control during low load operation 2 High pressure rise preven tion AC208 230V Open while being powered closed while not being pow ered Continuity check with a tester SV2 Prevention of low pressure drop Refrigerant equalization control AC208 230V Open while being powered closed while not being pow ered LEV LEV2a 2b During cooling Heat exchanger capacity control Duri...

Page 83: ...s the heat exchanger ca pacity by adjusting the operating frequency and operating the pro peller fan based on the operating pressure YNU HP72 HP120 AC380 460V 460W TNU HP72 HP120 AC200 230V 460W Panel heater Panel heater Heats the panel to avoid the freeze drain AC208V 230V Continuity check with a tester Part name Symbols functions Notes Usage Specifications Check method ...

Page 84: ...ge Continuity between yellow brown and blue Thermis tor TH1 Suction air tem perature Indoor unit control Thermo 0 C 32 F 15 kȍ 10 C 50 F 9 7 kȍ 20 C 68 F 6 4 kȍ 25 C 77 F 5 3 kȍ 30 C 86 F 4 3 kȍ 40 C 104 F 3 1 kȍ Resistance check TH2 Pipe tempera ture 1 Indoor unit control Frost prevention Hot adjust 2 LEV control during heat ing operation subcool detection TH3 Gas pipe tem perature LEV control du...

Page 85: ...nd Refrigerant Circuit Components of BC Controller 1 CMB P NU J1 JA1 KA1 1 Front 2 Rear view J1 type Liquid pipe Indoor unit side Low pressure pipe sub BC controller side Gas pipe Indoor unit side High pressure pipe sub BC controller side Liquid pipe sub BC controller side TH12 TH15 TH16 TH11 LEV1 LEV3 PS1 PS3 Tube in tube heat exchanger Tube in tube heat exchanger Gas Liquid separator ...

Page 86: ... type 4 Rear view KA1 type TH12 TH15 TH16 TH11 SVM1b SVM1 Low pressure pipe outdoor unit side LEV1 LEV3 LEV4 PS1 PS3 Tube in tube heat exchanger Gas Liquid separator High pressure pipe outdoor unit side Gas Liquid separator LEV3 LEV4 LEV1 SVM1b SVM1 TH16 TH15 TH12 TH11 PS3 PS1 Tube in tube heat exchanger Low pressure pipe outdoor unit side High pressure pipe outdoor unit side ...

Page 87: ...ant Circuit Components of BC Controller 10 chapter 3 HWE18220_GB 3 Major Components Their Functions and Refrigerant Circuits 2 CMB P NU KB1 1 Front 2 Rear view Liquid pipe Indoor unit side Gas pipe Indoor unit side TH15 TH12 TH16 LEV3 PS3 ...

Page 88: ...C SVA SVB CVB CVA Check valve block Solenoid valve block Orifice HIC A1 HIC A2 HIC B1 HIC B2 Low pressure pipe outdoor unit side High pressure pipe outdoor unit side TH15 TH12 Gas Liquid separator LEV3 LEV4 LEV1 TH16 PS1 PS3 TH11 SVC SVA SVB CVB CVA Check valve block Solenoid valve block SVM1 HIC A HIC B SVM1b Orifice Low pressure pipe outdoor unit side Low pressure pipe sub BC controller side Hig...

Page 89: ...valve block Solenoid valve block SVM1 HIC A HIC B SVM1b Orifice Low pressure pipe outdoor unit side Low pressure pipe sub BC controller side High pressure pipe sub BC controller side High pressure pipe outdoor unit side Liquid pipe sub BC controller side TH15 TH12 LEV3 TH16 PS3 SVC SVA SVB CVB CVA Check valve block Solenoid valve block HIC C Orifice Low pressure pipe main BC controller side High p...

Page 90: ...ure LEV control Superheat TH15 Bypass in let tempera ture LEV control Superheat TH16 Liquid re frigerant tempera ture LEV control Subcool Solenoid valve SVA Provides refrigerant to indoor unit in cooling operation AC208 230V Open while being powered closed while not being pow ered Continuity check with a tester SVB Provides refrigerant to indoor unit in heating operation SVC Provides refrigerant t...

Page 91: ... Liquid re frigerant tempera ture LEV control Subcool Solenoid valve SVM1 Opens during cooling and de frost modes AC208 230V Open while being powered closed while not being pow ered Continuity check with a tester SVM1b Opens during cooling and de frost modes SVA Provides refrigerant to indoor unit in cooling operation SVB Provides refrigerant to indoor unit in heating operation SVC Provides refrig...

Page 92: ... Liquid re frigerant tempera ture LEV control Subcool Solenoid valve SVM1 Opens during cooling and de frost modes AC208 230V Open while being powered closed while not being pow ered Continuity check with a tester SVM1b Opens during cooling and de frost modes SVA Provides refrigerant to indoor unit in cooling operation SVB Provides refrigerant to indoor unit in heating operation SVC Provides refrig...

Page 93: ...rheat TH16 Liquid re frigerant tempera ture LEV control Subcool Solenoid valve SVA Provides refrigerant to indoor unit in cooling operation AC208 230V Open while being powered closed while not being pow ered Continuity check with a tester SVB Provides refrigerant to indoor unit in heating operation SVC Provides refrigerant to indoor unit in cooling operation LEV LEV3 Pressure differential control ...

Page 94: ...3 Inverter Board INV Board 6 4 2 4 Fan Board 8 4 2 5 Noise Filter 10 4 2 6 Capacitor Board CAP Board 12 4 3 Outdoor Unit Electrical Wiring Diagrams 14 4 4 Transmission Booster Electrical Wiring Diagrams 16 4 5 BC Controller Circuit Board Arrangement 17 4 5 1 BC Controller Control Box 17 4 6 BC Controller Circuit Board Components 18 4 6 1 BC Board 18 4 6 2 Four Relay Board 19 4 6 3 Ten Relay Board ...

Page 95: ...HWE18220_GB ...

Page 96: ...oor Unit Control Box HIGH VOLTAGE WARNING Control box houses high voltage parts When opening or closing the front panel of the control box do not let it come into contact with any of the internal components Before inspecting the inside of the control box turn off the power keep the unit off for at least 10 minutes and confirm that the voltage of the capacitor in the main circuit has dropped to 20 ...

Page 97: ...hat the voltage is 20 VDC or below 7 After servicing reconnect the relay connector RYFAN1 and RYFAN2 in the INV box as it was 8 When opening or closing the front panel of the control box do not touch any of the internal components Before inspecting inside the control box turn off the power to the unit leave it turned off for at least 10 minutes and check that the voltage across Pin 1 and Pin 5 of ...

Page 98: ...heck that the voltage is 20 VDC or below 7 After servicing reconnect the relay connector RYFAN1 and RYFAN2 in the INV box as it was 8 When opening or closing the front panel of the control box do not touch any of the internal components Before inspecting inside the control box turn off the power to the unit leave it turned off for at least 10 minutes and check that the voltage across Pin 1 and Pin...

Page 99: ... OFF CN40 Centralized control system power supply ON TP1 Indoor outdoor transmission check pin TP2 Indoor outdoor transmission check pin Sensor input F001 AC250V 3 15A T CNUSB USB memory connector Actuator drive output SW4 6 Dip switch CNRYA 72C drive signal Abbreviated name of connector color Example BU above CN601 indicates that the connector is blue CN600 9 VDC input GND 12 VDC input GND CN603 ...

Page 100: ...put CN202 Indoor outdoor transmission signal input output Centralized control system power supply output CNINT GND 5 VDC input Indoor unit system power supply ON OFF signal input CN101 Cooling fan ON OFF signal input Inverter reset signal input Locked cooling fan sensor output Locked cooling fan sensor output CNFAN1 FAN1INV power supply output 17 VDC output N CNFAN2 FAN2INV power supply output 17 ...

Page 101: ... less The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions Refer to the wiring nameplate for details 5 After servicing reconnect the relay connector RYFAN1 RYFAN2 of the fan as it was 6 When the power is on the compressor or heater is energized even while the compressor is stopped Before turning on the power disconnect all power suppl...

Page 102: ...s The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions Refer to the wiring nameplate for details 5 After servicing reconnect the relay connector RYFAN1 RYFAN2 of the fan as it was 6 When the power is on the compressor or heater is energized even while the compressor is stopped Before turning on the power disconnect all power supply wi...

Page 103: ...ectors check that the outdoor unit fan is not rotating and that the voltage across pins 1 and 5 of connector RYPN is 20 VDC or less The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions Refer to the wiring nameplate for details 4 To connect wiring to TB7 check that the voltage is 20 VDC or below 5 After servicing reconnect the relay co...

Page 104: ...tors check that the outdoor unit fan is not rotating and that the voltage across pins 1 and 5 of connector RYPN is 20 VDC or less The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions Refer to the wiring nameplate for details 4 To connect wiring to TB7 check that the voltage is 20 VDC or below 5 After servicing reconnect the relay conn...

Page 105: ...GB 4 Electrical Components and Wiring Diagrams 4 2 5 Noise Filter 1 YNU TB13 Input L3 TB12 Input L2 TB11 Input L1 Ground Ground Ground Ground TB22 Output L2 TB23 Output L3 TB21 Output L1 F1 F2 F3 F4 Fuse 250 VAC 6 3 A CN2 Surge absorber circuit Surge absorber circuit ...

Page 106: ...iring Diagrams 2 TNU TB12 Input L2 TB13 Input L3 TB11 Input L1 TB22 Output L2 TB23 Output L3 TB21 Output L1 Ground Ground Ground F1 F2 Fuse 250 VAC 6 3 A CN12 Output L1 L2 CN13 Output L2 L3 CN14 Surge absorber circuit Surge absorber circuit Open phase detection circuit Open phase detection circuit ...

Page 107: ...x houses high temperature parts Be well careful even after turning off the power source 4 Perform the service after disconnecting the relay connector RYFAN1 RYFAN2 Before plugging in or unplugging connectors check that the outdoor unit fan is not rotating and that the voltage across pins 1 and 5 of connector RYPN is 20 VDC or less The capacitor may collect a charge and cause an electric shock when...

Page 108: ...s a locking function Make sure the cable heads are securely locked in place Press the tab on the terminals to remove them 3 Control box houses high temperature parts Be well careful even after turning off the power source 4 Perform the service after disconnecting the relay connector RYFAN1 RYFAN2 Before plugging in or unplugging connectors check that the outdoor unit fan is not rotating and that t...

Page 109: ...1 1 2 CNINT 4 red CNDC CN101 blue Control Board 3 1 2 1 2 3 3 1 2 1 2 3 CN202 CN201 red 63LS 63HS1 1 2 CNPOW yellow 1 3 CN3K yellow 1 3 CN3S red 3 1 3 CN3D 1 3 CN3N blue 4 1 CN41 2 3 4 1 CN40 2 3 TP1 TP2 TB3 TB7 M1 M2 M1 M2 S Indoor Outdoor transmission cable Central control transmission cable 4 CNAC 3 1 2 2 2 ON OFF X10 X07 X09 5 5 1 1 CN506 red 21S4b Power failure detection circuit CN507 black 3...

Page 110: ...901 X903 Magnetic relay inverter main circuit Z22 24 25 Function setting connector 1 4 7 1 3 1 3 1 LED2 Normal operation Lit Error Blink LED3 SW6 10 is OFF and LED101 SW4 1 10 are OFF In operation Lit In stop Unlit SW6 10 is ON Function setting by SW4 enable Lit disable Unlit Normal operation Lit IC Error Unlit 10 Difference of appliance Model name Appliance LEV1 LEV9 8 Difference of appliance Mod...

Page 111: ...d Red Red U U White White White White White White Blue Red Red DSA White White Blue Red Red Red Red Varistor Varistor Noise filter Stabilized power supply 4 3 2 1 1 2 3 CN2 CN1 Black Black Black Black Green Yellow 1 2 3 E 4 Choke coil 1 2 CN3 1 2 1 2 CN4 CN2 1 2 CN1 Electronic control board Black White Red Red Black S B A S B A Terminal block 2 for transmission line TB3 Expanded indoor unit side T...

Page 112: ...chapter 4 17 4 Electrical Components and Wiring Diagrams 4 5 BC Controller Circuit Board Arrangement 4 5 1 BC Controller Control Box 1 CMB P1016V J1 JA1 KA1 Relay board Transformer BC board Terminal block for transmission line Terminal block for power supply ...

Page 113: ...ectrical Components and Wiring Diagrams 4 6 BC Controller Circuit Board Components 4 6 1 BC Board SW1 SW2 SW5 SW6 SW4 Abbreviated name of connector color Examples BU BLUE BK BLACK GN GREEN YE YELLOW WH WHITE RD RED Example BU above CN601 indicates that the connector is blue ...

Page 114: ... 4 6 BC Controller Circuit Board Components HWE18220_GB chapter 4 19 4 Electrical Components and Wiring Diagrams 4 6 2 Four Relay Board 4 6 3 Ten Relay Board ...

Page 115: ...W6 2 2 1 1 3 3 TB01 LEV1 LEV3 1 2 3 4 5 6 PS3 PS1 TH16 TH15 TH12 TH11 CN07 CN11 CN10 CN03 1 2 3 2 1 1 2 3 4 8 7 6 5 4 3 2 1 CNP3 3 2 1 CNP1 3 CN02 CNTR Red 2 1 CONT B 1 2 3 4 5 6 CN05 3 5 1 CN12 1 3 CN26 TB02 TR S SHIELD L1 L2 M2 M1 1 2 Z1 TYP1 G CN13 Red 2 1 T1 T2 T3 T4 4 3 2 1 SV1C SV1B SV1A 4 3 2 1 SV2B SV2A SV2C 4 3 2 1 SV3B SV3A SV3C 4 3 2 1 SV4B SV4A SV4C Note 1 TB02 is transmission terminal...

Page 116: ...2 1 TB01 10 9 8 4 2 3 10 7 5 6 4 3 2 1 2 3 4 1 2 3 4 2 3 4 9 8 7 6 5 7 5 3 1 7 5 3 1 7 5 3 1 1 1 1 13 12 11 16 15 14 13 12 11 15 16 14 1 2 1 4 2 3 4 3 4 3 2 1 1 2 3 4 1 2 3 4 5 3 1 7 5 3 1 7 5 3 1 CN30 Black CN31 Yellow CN36 Green 1 2 Z1 TYP1 5 6 5 8 6 7 8 7 G 1 2 Red CN13 T5 SV5C SV5A SV5B 1 2 3 4 T6 SV1A SV1B T4 SV1C 1 SV6C SV6A SV6B 1 SV4C 2 SV4A 3 SV4B 4 1 2 3 4 2 3 4 T3 SV3C SV3A SV3B 1 2 3 4...

Page 117: ...7 1 1 1 4 3 2 4 3 2 4 3 2 1 4 3 2 11 12 13 8 9 10 5 6 7 14 15 16 8 9 10 11 12 13 5 6 7 14 15 16 1 2 1 2 3 3 4 3 2 1 7 6 5 4 3 2 1 CN39 3 1 CN52 CONT B 6 5 4 3 2 1 6 5 4 3 2 1 1 2 3 1 2 3 CNP3 1 2 3 4 5 6 7 8 4 3 2 1 1 2 3 2 1 CN03 CN02 CN10 CN11 TH11 TH12 TH15 TH16 TR PS1 PS3 CN50 7 6 5 4 3 2 1 1 2 3 4 5 6 7 1 3 5 1 3 CN38 CN26 3 1 CNTR REL B 1 2 Z1 TYP1 G 1 2 Red CN13 T1 T2 T3 T4 T5 T6 4 3 2 1 SV...

Page 118: ... 7 7 5 3 1 7 5 3 1 CN41 Green CN43 Red CN42 5 7 7 5 3 1 7 5 3 1 5 3 1 3 Yellow CN40 1 5 6 7 8 9 10 11 12 13 14 15 16 3 2 4 8 9 10 11 12 13 3 2 4 5 6 7 14 15 16 4 3 2 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 1 2 3 4 3 3 2 1 2 1 CN26 5 3 3 1 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 1 1 1 16 16 13 14 15 9 10 11 12 5 6 7 8 4 4 5 6 8 7 9 12 11 10 15 14 13 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 CN32 7 5 3 1 3 3 7 5 3 1 ...

Page 119: ...16 15 14 7 6 5 10 9 8 13 12 11 2 3 4 1 2 3 4 2 3 4 2 3 4 1 1 1 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 7 1 4 2 3 1 4 2 3 1 2 3 4 5 3 1 1 2 3 4 1 2 3 4 13 14 15 10 11 12 9 7 8 6 5 4 4 8 7 6 5 12 11 10 9 15 14 13 16 16 CN32 5 7 3 1 7 5 3 1 7 5 3 1 7 5 1 3 3 3 CN46 Yellow 3 1 3 1 1 2 3 4 4 1 2 3 1 2 3 1 2 3 1 2 Z1 TYP1 X62 X61 CN47 1 3 5 6 5 6 6 5 4 5 6 4 5 6 SVM1b 7 8 8 7 M LEV4 1 2 3 4 5 6 Green CN...

Page 120: ... 9 10 11 12 13 3 2 4 5 6 7 14 15 16 4 3 2 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 1 2 3 4 3 3 2 1 2 1 CN31 Yellow CN30 Black CN29 Green CN28 Blue CN27 Red CN26 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 1 1 1 16 16 13 14 15 9 10 11 12 5 6 7 8 4 4 5 6 8 7 9 12 11 10 15 14 13 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 CN32 7 5 3 1 3 3 7 5 3 1 7 5 3 1 7 5 3 1 3 1 3 1 CN36 Green CN46 Yellow 3 2 2 3 1 1 2 1 2 Z1 TYP...

Page 121: ... 5 7 CN41 Green X44 X43 X45 CN42 X47 X46 X48 CN43 Red X50 X49 X51 CN44 Yellow X53 X52 3 5 1 7 5 3 1 7 5 3 1 3 5 7 6 5 4 2 3 2 3 6 5 4 7 12 11 10 9 8 11 12 10 7 9 8 1 1 1 2 3 4 1 2 X54 CN45 Green X56 X55 X57 7 5 3 1 7 15 14 13 1 2 4 3 16 14 15 13 5 6 8 7 16 1 2 3 4 5 8 5 6 7 1 2 4 3 1 2 3 4 4 3 2 1 2 1 3 4 4 3 1 4 3 2 6 CONT B REL B M2 M1 TB01 L1 L2 M M Red CN05 Yellow CN07 6 6 5 5 4 4 3 3 2 2 1 1 ...

Page 122: ...3 1 X32 X05 X06 CN28 Blue X04 X03 X31 7 5 3 1 CN27 Red X30 X01 X02 CN26 CNTR TR 1 1 3 2 2 CN02 CN03 Yellow TH16 M Yellow LEV3 1 2 3 4 5 6 CN07 1 2 Z1 TYP1 2 1 3 PS3 CNP3 3 2 1 Red SW4 SW5 SW6 G 2 1 CN13 Red T1 T2 T3 T4 SV1A SV1B SV1C 1 2 3 4 SV2C SV2A SV2B 1 2 3 4 SV3C SV3A SV3B 1 2 3 4 SV4C SV4A SV4B 1 2 3 4 Fuse AC250V 6 3A F F01 Solenoid valve SV1 4A B C TB02 Terminal block for Transmission Ter...

Page 123: ...2 CN35 Blue 16 16 13 14 15 9 10 11 12 5 6 7 8 4 4 5 6 8 7 9 12 11 10 15 14 13 4 3 2 1 4 3 2 1 1 3 5 4 3 2 1 3 2 4 1 3 2 4 1 7 1 3 5 7 1 3 5 7 1 3 5 7 1 3 5 7 1 3 5 7 1 1 1 4 3 2 4 3 2 4 3 2 1 4 3 2 11 12 13 8 9 10 5 6 7 14 15 16 8 9 10 11 12 13 5 6 7 14 15 16 1 2 1 2 3 3 4 3 2 1 7 6 5 4 3 2 1 CN39 3 1 CN52 1 3 5 1 3 CN38 CN26 3 1 CNTR REL B G T1 T2 T3 T4 T5 T6 4 3 2 1 SV1C SV1A SV1B 1 2 3 4 SV2B S...

Page 124: ...5 Refrigerant Bypass Control 12 5 2 6 Frequency Control 13 5 2 7 Defrost Operation Control 14 5 2 8 Continuous heating mode control 17 5 2 9 Refrigerant Recovery Control 19 5 2 10 Outdoor Unit Fan Control 19 5 2 11 Expansion valve control LEV2a LEV2b and LEV2d 20 5 2 12 Control of Controller Cooling Function Electronic Expansion Valve LEV9 20 5 2 13 Injection Control Linear Expansion Valve LEV4 20...

Page 125: ...HWE18220_GB ...

Page 126: ...o the centralized con troller Before power on B 2 Deletion of connec tion information Normal control Deletion Before power on A 3 Preset before shipment 4 5 6 7 8 SW6 4 Model setting out door unit high static pressure setting High static pressure Note 5 Before power on C 5 Model setting out door unit high static pressure setting Before power on C 7 Performance priority low noise mode set ting Perf...

Page 127: ...or 30 seconds and comes to an error stop See the rele vant pages for de tails 8 10 8 Checking the Fan Board for Damage at No Load No load operation disabled No load operation enabled Any time after pow er on C 3 4 Enables or disables no load operation of the right fan inverter The unit continues no load operation for 30 seconds and comes to an error stop See the rele vant pages for de tails 8 10 8...

Page 128: ...perature or the high pressure is high Heating When the outside air temperature is low or when the low pressure is low Refer to the following page s 2 4 7 Var ious Control Methods Using the Signal Input Output Connector on Outdoor Unit 4 Operation noise is reduced by controlling the compressor frequencies and the rotation speed of the outdoor unit fans CN3D needs to be set Refer to the following pa...

Page 129: ...ng energized and while the com pressor is stopped A No 913 1000100111 Forced defrost Note 3 Normal control Forced defrost starts 10 minutes after the completion of de frost operation OFFĺON or 10 minutes after compressor start up OFFĺON D No 915 1100100111 Defrost start temperature Note 3 10 C 14 F 5 C 23 F Anytime after power on B No 916 0010100111 Defrost end temperature Note 3 7 C 45 F 12 C 54 ...

Page 130: ...ls are blank which may be set to OFF for a reason 6 The settings that are configured with SW4 SW6 10 ON will automatically be stored on the indoor units that support the new function The stored settings will automatically be restored when the outdoor unit control board is replaced If none of the connected indoor units supports the new function no configuration information will be saved If this is ...

Page 131: ... 4 to ON address 6 on the fan board on the left Leave SW1 1 to OFF during normal operation Setting this switch to ON will disable the error detection function and may result in equipment damage Switch Function Function according to switch setting Switch setting timing OFF ON SW1 1 Enabling Disabling no load opera tion No load operation will continue for approximately 30 seconds and then the unit w...

Page 132: ...lay option Humidifier control Self recovery after power failure Fan speed setting for Heating Thermo OFF Power source start stop Unit model selection Louver Vane Vane swing function Vane angle limit setting for cooling operation Heating 4 C 7 2 F up Automatic LEV value conversion function Indoor unit inlet 100h Disabled Fan output 2500h Enabled Thermo ON signal Built in sensor on the remote contro...

Page 133: ...s Ordinarily only change the Main Sub setting of SW1 The factory settings are ON for SW1 2 and 3 and OFF for SW4 The MA remote controllers PAR 21MAAU PAR 30MAAU do not have the switches listed above Refer to the installation manual for the function setting ON 1 2 3 4 ON 1 2 3 4 5 6 7 8 9 10 The figure at left shows that the switches 1 through 5 are set to ON and 6 through 10 are set to OFF Comment...

Page 134: ... 10 s digit 1 s digit left right Remote controller unit Rotary switch Example In case of address 108 Address setting range Setting method Main remote controller 101 150 Add 100 to the smallest address of all the indoor units in the same group Sub remote controller 151 200 Add 150 to the smallest address of all the indoor units in the same group Setting of rotary switch Address No 01 99 1 101 199 w...

Page 135: ...and HB models Switch Function Function according to switch setting Switch setting timing OFF ON SW4 1 Model setting R410A Always leave this switch to OFF 2 5 6 No of ports 1 2 Before being energized 7 8 SW5 1 6 7 Model setting Refer to the table below Before being energized 8 Model setting Refer to the table below Before being energized SW5 8 OFF ON SW5 7 OFF J type ON JA KA type KB type ...

Page 136: ... outdoor units operates for four hours in total For information about rotation control at initial startup refer to the following page s 5 2 14 Control at Initial Startup Performing startup sequence rotation does not change the basic operation of OC and OS Only startup sequence is changed Startup sequence of the outdoor units can be checked with the self diagnosis switch SW4 on the OC 5 2 3 Initial...

Page 137: ... cooling or heating operation with the compressor stopped Always ON Exception OFF when 63HS1 63LS is 0 2MPa 29psi or less After the operation has stopped ON for 3 minutes Exception OFF when 63HS1 63LS is 0 2MPa 29psi or less During defrost operation ON While the compressor is operating at the minimum frequency and when the low pres sure 63LS drops 3 or more minutes after compressor startup When th...

Page 138: ...seconds The actuation pressure is when the high pressure reading on 63HS1 is 3 58MPa 519psi 2 Discharge temperature limit Discharge temperature TH4 of the compressor in operation is monitored and when it exceeds the upper limit the frequency is decreased every minute Operating temperature is 110 C 230 F 3 Periodic frequency control Frequency control other than the ones performed at start up upon s...

Page 139: ...ill simultaneously go into the defrost cycle in a system with multiple units The units that are not in operation may or may not go into the defrost cycle depending on the cumulative operation time of their compressors All units in the heating mode will simultaneously go into the defrost cycle in a system with multiple units Condition 1 Condition 2 Condition 3 Outside temperature TH7 5ºC 23ºF or ab...

Page 140: ...n the compressor bottom SH TH15 Te 10ºC 18ºF Outdoor unit Compressor frequency Model Compressor frequency HP72 model 107Hz HP96 HP120 models 121Hz Outdoor unit fan Stopped SV1a ON open LEV2a 2b 3000 LEV2d 20 LEV4 0 LEV9 480 21S4a 21S4b OFF SV2 OFF closed ON open BC controller LEV1 J type 3000 JA type 3000 KA type 3000 LEV3 a J type 3000 JA type 3000 KA type 3000 KB type 60 full closed LEV4 JA and ...

Page 141: ...ressor bottom SH TH15 Te 10ºC 18ºF And the defrost mode may continue even after 12 minutes 2 5 C 41 F Į 25 C 77 F 4 Problems during defrost operation If a problem is detected during defrost operation the operation will be stopped and the defrost prohibition time based on the integrated compressor operation time will be set to 20 minutes The unit will stop after the defrost operation when the total...

Page 142: ...uring Continuous heating cycle 1 When Single unit Continuous heating operation is performed in the order shown below On a single unit model of HP72 HP144 defrosting is performed on the front and rear heat exchangers separately Operation patterns are shown in the table below Single unit Combination units Outside temperature TH7 1 0 C 33 8 F TH7 7 0 C 44 6 F 5 0 C 23 0 F TH7 7 0 C 44 6 F Cumulative ...

Page 143: ... defrosting of the second unit is performed while the unit is in operation 3 Continuous heating mode end conditions Continuous heating mode will end when the Continuous heating mode time in the table below is reached When the Continuous heating mode ends the frequency is reduced once Unit in defrost cycle Unit in operation Outdoor unit fan 1 Stopped In operation Outdoor unit fan 2 Stopped In opera...

Page 144: ...0 C 32 F 0 71 MPa 103 psi during heating operation The OS in the multiple outdoor unit system operates at the actual outdoor unit fan control value that is calculated by the OS based on the preliminary outdoor unit fan control value that the OC determines 2 Control Outdoor unit fan stops while the compressor is stopped except in the presence of input from snow sensor The fan operates at full speed...

Page 145: ... every 30 seconds so that the temperature at the bypass inlet TH15 of the BC controller is in a constant range during the heating only or heating main operation 5 2 12 Control of Controller Cooling Function Electronic Expansion Valve LEV9 Control of controller cooling function is performed individually for OC and OS The opening of LEV9 is adjusted every three seconds to keep the controller heatsin...

Page 146: ... or F 50Hz OS Completed in the integrated operation time of 90 minutes The compressor on the OS starts up 2 3 2 The air conditioning load is too small for both the OC and the OS to simultaneously stay in operation 3 The air conditioning load is high enough for both OC and OS to simultaneously stay in operation Initial startup mode complete or the discharge superheat TH4 Tc is detected within 5 min...

Page 147: ...ration pattern 2 outdoor units 1 If an attempt is made to put into operation a group of indoor units whose total capacity exceeds the maximum allowable ca pacity some of the indoor units will go into the same condition as Thermo OFF Trouble source Error codes that permit an emergency operation Error code description Compressor Fan motor Inverter 0403 Serial communication error 4220 4225 4226 Bus v...

Page 148: ... before servicing the unit When the OC is in trouble the OS temporarily takes over the OC s function and performs an emergency operation When this happens the indoor unit connection information are changed In a system that has a billing function a message indicating that the billing system information has an error may appear on the TG 2000A Even if this message appears do not change or set the ref...

Page 149: ...or units in operation are in heating mode 3 Cooling main mode Coexistence of units in cooling and heating modes 4 Heating main mode Coexistence of units in cooling and heating modes 5 Stopping mode All indoor units are in fan mode or stopping mode 1 5ºC 0 5ºC 0 5ºC 1 5ºC Set temp 1ºC 1ºC Cooling 3 minutes 3 minutes Switches to cooling mode Switches to heating mode Cooling Cooling Cooling Cooling H...

Page 150: ... Outdoor Unit 5 2 18 Control of IH energization without the compressor in operation IH is used to heat the compressor motor on the stopped outdoor unit to make liquid refrigerant in the compressor evaporate or to keep liquid refrigerant from flooding the compressor Initial power on after power is turned on Stays on for 12 hours and then transitions to the operation that is performed while the comp...

Page 151: ...ode Cooling only Cooling main Heating only Heating main Defrost Stopped J JA KA type LEV1 3000 Liquid level control 1dif ferential control 2 1 Liquid level control The liquid level detected by the liquid inlet temperature TH11 sensor is controlled so as to be within a certain range 2 Pressure differential control The detected differential pressure PS1 and PS3 is controlle every minute so as to be ...

Page 152: ... Refrigerant Charge 2 6 3 Evaluating and Adjusting Refrigerant Charge 3 6 3 1 Refrigerant Overcharge and undercharge 3 6 3 2 Checking the Refrigerant Charge during Operation 3 6 3 3 Maximum refrigerant charge 3 6 3 4 Refrigerant Charge Adjustment Mode 4 6 4 The Following Symptoms Are Normal 6 ...

Page 153: ...HWE18220_GB ...

Page 154: ... time because of the accumulation of refrigerant in the compressor If insulation resistance reads at least 1 Mȍ by turning on the main power and keeping it on for at least 12 hours the refrigerant in the compressor will evaporate and the insulation resistance will go up Do not measure the insulation resistance of the terminal block for transmission line for the unit remote controller 4 When the po...

Page 155: ... all indoor units are in operation 3 General tendency of discharge temperature Discharge temperature tends to rise when the system is short on refrigerant Changing the amount of refrigerant in the system while there is refrigerant in the accumulator has little effect on the discharge temperature The higher the pressure the more likely it is for the discharge temperature to rise The lower the press...

Page 156: ...gerant The operating frequency does not reach the set frequency and there is a problem with performance Insufficient refrigerant amount The system comes to an abnormal stop displaying 1102 abnormal discharge temper ature on the controller Symptoms Conclusion Discharge temperature is high Normal discharge temperature is below 95 C 203 F Slightly under charged refrigerant Low pressure is unusually l...

Page 157: ... 5 4 F SC11 on the BC on the outdoor unit 10 C 18 F 10 C 18 F SC16 on the BC on the outdoor unit 5 C 9 F SH on the indoor unit 15 C 27 F The refrigerant amount may seem adequate at the moment but may turn out to be inadequate later on Any of the following formulas is true SC11 on the BC on the outdoor unit 3 C 5 4 F SC11 on the BC on the outdoor unit 10 C 18 F SC16 on the BC on the outdoor unit 10...

Page 158: ...vice port on the low pressure side Is the TH4 value of the OC and OS at or below 100 C 212 F Has the operating frequency of the compressor on the OC and OS become stable Does the following hold true TH4 95 C 203 F on the OC and OS Does the following hold true 10 C 18 F SC16 on the BC Operation of the Refrigerant Amount Adjust Mode When the unit is the refrigerant amount adjust mode the LEV on the ...

Page 159: ... for 2 minutes and finally it operates at the set speed Pre heating stand by When the main power is turned on the display shown on the right appears on the in door unit remote controller for 5 minutes HO or PLEASE WAIT icons blink on the display The system is starting up Wait until the blinking display of HO or PLEASE WAIT go off The drain pump keeps run ning after the unit has stopped Unlit The d...

Page 160: ...ror Code 3512 20 7 6 Error Code Definitions and Solutions Codes 4000 4999 21 7 6 1 Error Code 4102 21 7 6 2 Error Code 4106 22 7 6 3 Error Code 4109 22 7 6 4 Error Code 4114 23 7 6 5 Error Code 4116 23 7 6 6 Error Code 4121 23 7 6 7 Error Code 4124 24 7 6 8 Error Codes 4220 4225 4226 Detail Code 108 25 7 6 9 Error Codes 4220 4225 4226 Detail Code 108 26 7 6 10 Error Codes 4220 4225 4226 Detail Cod...

Page 161: ...1 Error Code 6201 46 7 8 2 Error Code 6202 46 7 8 3 Error Code 6600 46 7 8 4 Error Code 6601 47 7 8 5 Error Code 6602 48 7 8 6 Error Code 6603 49 7 8 7 Error Code 6606 49 7 8 8 Error Code 6607 Error Source Address Outdoor Unit OC 50 7 8 9 Error Code 6607 Error Source Address BC controller BC 50 7 8 10 Error Code 6607 Error Source Address Indoor Unit IC 51 7 8 11 Error Code 6607 Error Source Addres...

Page 162: ...20_GB 7 9 4 Error Code 7105 70 7 9 5 Error Code 7106 70 7 9 6 Error Code 7107 71 7 9 7 Error Code 7110 72 7 9 8 Error Code 7111 72 7 9 9 Error Code 7113 73 7 9 10 Error Code 7117 75 7 9 11 Error Code 7130 76 ...

Page 163: ...HWE18220_GB ...

Page 164: ...e 17 2601 Water supply cutoff O page 17 3121 Out of range outside air temperature O page 18 3511 3611 Refrigerant overcooling O page 19 3512 3612 Locked cooling fan O page 20 4102 4152 Open phase O page 21 4106 Transmission power supply fault O page 22 4109 Indoor unit fan operation error O page 22 4114 Indoor unit fan motor error O page 23 4116 RPM error Motor error O O page 23 4121 4171 í Functi...

Page 165: ... 38 OA processing unit inlet temperature TH4 O page 38 5102 1217 Temperature sensor fault Indoor unit pipe tempera ture TH22 O page 38 OA processing unit pipe temperature TH2 O page 38 5103 1205 00 Temperature sensor fault Indoor unit gas side pipe temperature TH23 O page 38 OA processing unit gas side pipe temperature TH3 O page 38 Pipe temperature at heat exchanger outlet TH3 O page 39 5104 1202...

Page 166: ...127 DCL electric current circuit error O page 44 5305 5306 4305 4306 0 Backup operation O 135 Position detection error at startup O page 45 136 Position detection error during operation O page 45 5701 Loose float switch connector O page 45 6201 Remote controller board fault nonvolatile memory error O page 46 6202 Remote controller board fault clock IC error O page 46 6600 001 Detection of overlapp...

Page 167: ...ontrol communication reception error O page 63 6841 A control communication synchronism not recover O page 63 6842 A control communication transmission reception hardware trouble O page 64 6843 A control communication start bit detection error O page 65 6846 Start up time over O page 66 7100 Total capacity error O page 67 7101 Capacity code setting error O O O page 68 7102 Wrong number of connecte...

Page 168: ...inverter system Compressor inverter Fan inverter The last digit Inverter system 0 or 1 Compressor inverter system 5 or 6 Fan inverter system INV board Outdoor units Overload protec tion Imax Arms Current effective value error Arms Current peak value error Apeak Temperature protection TOL C INV42Y HP72YNU 27 33 56 95 INV42Y HP96YNU INV42Y HP120YNU INV38 HP72TNU 48 58 99 95 INV38 HP96TNU 51 61 104 I...

Page 169: ...rd 2 PS board failure Replace the PS board if the LED on the INV board Fan board or control board is not lit Using the detail codes check the status of the LEDs on the circuit boards below Detail code 1 LED on the INV board Detail code 5 LED on the right Fan board Detail code 6 LED on the left Fan board When the power supply board is normal all LEDs will be lit 3 INV board failure Fan board failur...

Page 170: ...rol related errors 2 Error definition and error detection method Indoor controller board Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board 3 Cause check method and remedy Note Refer also to the Service Handbook for the indoor units Cause Check method and remedy Defective indoor controller board Replace indoor controller board ...

Page 171: ... Gas leak gas shortage Refer to the following page s 6 3 Evaluating and Adjusting Refrigerant Charge 2 Overload operation Check operating conditions and operation status of indoor outdoor units 3 LEV failure on the indoor unit Perform a heating operation and check the operation Cooling LEV on the indoor unit BC controller LEV1 3 SVM1 2 SVA C Heating LEV on the indoor unit BC controller LEV3 4 SVB ...

Page 172: ...e reads 0 098MPa 14psi immediately before start up the operation immediately stops 3 Cause check method and remedy Cause Check method and remedy 1 Inner pressure drop due to a leakage Refer to the following page s 8 5 3 Comparing the Low Pressure Sensor Measurement and Gauge Pressure 2 Low pressure sensor failure 3 Short circuited pressure sensor cable due to torn outer rubber 4 A pin on the male ...

Page 173: ... 2 BC controller LEV malfunction Heating only or heating main Indoor LEV 3 4 Defrost LEV3 4 3 BC controller SVM1 and 2 malfunction ĺCooling only or defrost 4 BC controller SVA and SVC malfunction ĺCooling only or cooling main 5 BC controller SVB malfunction ĺHeating only or heating main Solenoid valve actuation failure SV4a SV4b SV4c or SV4d ĺCooling only or cooling main 6 Actuation failure in the...

Page 174: ...ompressor bottom SH TH15 Te 10ºC 18ºF is satisfied during the defrost operation and if the formula compressor bottom SH TH15 Te 10ºC 18ºF is also satisfied after the defrost operation the same sequence as Item 1 above first detection is followed 3 Cause check method and remedy 21 Thermistor mounting problem TH3 TH7 Check the sensor temperature pressure on the LED monitor 22 Disconnected male conne...

Page 175: ...ion of water leakage is also performed while the unit is stopped 4 Preliminary water leakage is cancelled when the following conditions are met One hour after the preliminary water leakage was detected it is not detected that the drain pump goes from OFF to ON The operation mode is changed to Cool Dry The liquid pipe temperature minus the inlet temperature is 10 C 18 F or less 3 Cause check method...

Page 176: ...llowing conditions are met One hour after the preliminary water leakage was detected it is not detected that the drain pump goes from OFF to ON The operation mode is changed to Cool Dry The liquid pipe temperature minus the inlet temperature is 10 C 18 F or less 3 Cause check method and remedy Reference Cause Check method and remedy 1 Drain water drainage problem Clogged drain pump Clogged drain p...

Page 177: ... came to an error stop 6 Forced stoppage of the outdoor unit Detection timing The error is detected whether the unit is in operation or stopped 7 Ending criteria for the forced stoppage of outdoor unit Power reset the indoor unit that was identified as the error source and the outdoor unit that is connected to the same refrig erant circuit Forced stoppage of the outdoor unit cannot be cancelled by...

Page 178: ...ohibited and the outdoor unit brings all the indoor units in the same refrigerant circuit that are in any mode other than Fan or Stop to an error stop 2502 appears on the monitor of the units that came to an error stop 6 Forced stoppage of the outdoor unit Detection timing The error is detected whether the unit is in operation or stopped 7 Ending criteria for the forced stoppage of outdoor unit Po...

Page 179: ...except during the defrost cycle When the liquid temperature thermistor or suction temperature thermistor or short or open circuited Drain pump is in operation One hour has elapsed since the drain sensor went off Short 90 C 194 F or above Open 20 C 4 F or below 3 Cause check method and remedy Cause Check method and remedy 1 Faulty connector CN31 insertion 1 Check for connector connection failure Re...

Page 180: ...Error code definition Water supply cutoff 2 Cause check method and remedy Cause Check method and remedy 1 The water tank of the humidifier is empty Check the amount of supply water Check for the solenoid valve and for the connection 2 The solenoid valve for humidification is OFF Check the connector 3 Disconnected float switch Check the connecting part 4 Poor operation of float switch Check for the...

Page 181: ...or display needs to be canceled by setting the remote controller Outdoor temperature error is canceled if the units stop during error stop The error display needs to be canceled by setting the remote controller 3 Cause check method and remedy Check the following factors if an error is detected without drop in the outdoor temperature Reference Cause Check method and remedy 1 Thermistor failure Chec...

Page 182: ...l come to an abnormal stop and this error will be indicated as 3511 4 If the condition THHS A 1 C remains true for continuous 6 minutes and 30 seconds is met regardless of the first or second time after 30 minutes of the first occurrence or after the condition THHS A 1 C remains true for continuous 2 minutes has been met it is considered as the first occurrence and the unit will follow the same be...

Page 183: ...ing the rotation of the cooling fan 2 Cooling fan motor trouble Disconnect the wiring from the cooling fan motor and check the insulation resistance and the coil resistance of the motor Replace the motor if problems are found Criteria for insulation failure Insulation failure if below 1 Mȍ Wire disconnection Normal if coil resistance is between 56 and 65 ȍ 3 Contact failure Check the wiring betwee...

Page 184: ...s Check for coil burnout 3 Wiring failure TNU models Check the wiring between CN13 on the noise filter and CNAC on the control board Check the wiring between CN11 on the noise filter and CN110 on the control board YNU models Confirm that the voltage at the control board connector CNAC is 190 V or above If the voltage is below 190 check the wiring between each of the following TB21 TB22 TB23 of the...

Page 185: ...ection method Transmission power reception failure 3 Cause One of the outdoor units stopped supplying power but no other outdoor units start supplying power 4 Check method and remedy Check the transmission power supply circuit on all outdoor units in a given refrigerant circuit for problems 8 11 2 Trouble shooting Problems with Outdoor Unit Transmission Power Supply Circuit 7 6 3 Error Code 4109 1...

Page 186: ...d remedy 1 Fan motor connector contact failure Check the fan motor connector CNMF for proper connection 2 Indoor unit circuit board failure Remove the fan motor connector CNMF and check the voltage at the indoor unit circuit board Testing point 1 280 VDC Between CNMF1 and CNMF4 2 15 VDC Between CNMF5 and CNMF4 Replace the indoor unit circuit board if the voltage is abnormal If the 4114 error persi...

Page 187: ...ot 0V DC between CN1X1 and ĺReplace the damper limit switch open There is not 5V DC between CN1X1 and ĺReplace the damper limit switch close 4 If damper opens or closes and voltages in 3 are normal measure the voltage between CN1X1 and and the voltage between CN1Y1 and during the damper close by pressing VANE CONTROL button There is not 5V DC between CN1X1 and ĺReplace the damper limit switch open...

Page 188: ... V check the following items 1 Check the coil L connections and for broken wiring 2 Check the wiring connections between noise filter board and INV board and between INV board and R1 through R5 3 Check the in rush current resistor Refer to the following page s 8 10 13 Simple Check on Inverter Circuit Compo nents 4 If the problem persists after reboot replace the INV board 4225 4226 Check the volta...

Page 189: ...low 253 V check the following items 1 Check the coil L connections and for broken wiring 2 Check the wiring connections between noise filter board and INV board between INV board and capacitor board and between INV board and R1 3 Check the in rush current resistor Refer to the following page s 8 10 13 Simple Check on Inverter Circuit Compo nents 4 If the problem persists after reboot replace the I...

Page 190: ... board failure If the problem recurs replace the INV board or fan board In the case of 4220 INV board In the case of 4225 and 4226 Fan board For inverter related error codes refer to the following page s 8 10 Troubleshooting Inverter Problems 7 6 11 Error Code 4220 Detail Code 110 1 Error code definition VDC error Detail code 110 2 Error definition and error detection method BUS voltage error When...

Page 191: ...remedy For inverter related error codes refer to the following page s 8 10 Troubleshooting Inverter Problems Cause Check method and remedy 1 External noise Refer to the following page s 8 10 2 Checking the Inverter Board Error Detection Circuit 2 INV board failure Cause Check method and remedy 1 External noise Refer to the following page s 8 10 7 Checking the Fan Board Error Detection Circuit at N...

Page 192: ...e as detail code 108 of 4220 error For inverter related error codes refer to the following page s 8 10 Troubleshooting Inverter Problems 7 6 16 Error Codes 4220 4225 4226 Detail Code 131 1 Error code definition Low bus voltage at startup Detail code 131 TNU 2 Error definition and error detection method When Vdc 160 V is detected just before the inverter operation TNU 3 Cause check method and remed...

Page 193: ...or proper installation of the INV board and FAN board IGBT Check for proper installation of the IGBT heatsink 2 Check the THHS sensor reading on the LED monitor ĺIf an abnormal value appears replace the INV board 3 Outdoor unit LEV9 malfunc tion Check the operation of the unit in the Cooing or in the Heating mode LEV9 Refer to the following page s 8 8 Troubleshooting LEV Problems 4 Low pressure se...

Page 194: ... 4 Inverter FAN board failure Refer to the following page s 8 10 Troubleshooting Inverter Problems 5 Compressor failure Check that the compressor has not overheated during operation ĺ Check the refrigerant circuit oil return section Refer to the following page s 8 10 3 Checking the Compressor for Ground Fault and Coil Resistance Problems 6 The model selection switches SW5 3 5 8 on the outdoor unit...

Page 195: ...Checking the Inverter for Damage at No Load 8 10 5 Checking the Inverter for Damage during Compressor Operation 8 10 10 Checking the Installation Conditions Check the IGBT module resistance value of the INV board if no problems are found 8 10 14 Troubleshooting Problems with IGBT Module 2 The model selection switches SW5 3 5 8 on the outdoor unit are set incorrectly Check the setting for the model...

Page 196: ...o the following page s 8 10 3 Checking the Compressor for Ground Fault and Coil Resistance Problems 2 Inverter output related Refer to the following page s 8 10 2 Checking the Inverter Board Error Detection Circuit 8 10 3 Checking the Compressor for Ground Fault and Coil Resistance Problems 8 10 4 Checking the Inverter for Damage at No Load 8 10 5 Checking the Inverter for Damage during Compressor...

Page 197: ...ause Check method and remedy In the case of 4250 In the case of 4255 and 4256 For inverter related error codes refer to the following page s 8 10 Troubleshooting Inverter Problems Cause Check method and remedy 1 Short circuited compressor Refer to the following page s 8 10 3 Checking the Compressor for Ground Fault and Coil Resistance Problems 2 Output wiring Check for a short circuit Cause Check ...

Page 198: ... Check the IGBT module resistance value of the INV board if no problems are found 8 10 14 Troubleshooting Problems with IGBT Module 2 The model selection switches SW5 3 5 8 on the outdoor unit are set in correctly Check the setting for the model selection switch on the outdoor unit Dipswitches SW5 3 5 8 on the outdoor unit control board For switch settings refer to the following page s 7 9 2 Error...

Page 199: ...refer to the following page s 8 10 Troubleshooting Inverter Problems Cause Check method and remedy 1 Inverter output related items Refer to the following page s 8 10 2 Checking the Inverter Board Error Detection Circuit Refer to the following page s 8 10 3 Checking the Compressor for Ground Fault and Coil Resistance Problems Refer to the following page s 8 10 4 Checking the Inverter for Damage at ...

Page 200: ...s 7 6 27 Error Code 4260 1 Error code definition Heatsink overheat protection at startup 2 Error definition and error detection method When heatsink temperature THHS remains at or above TOH for 10 minutes or longer after inverter startup 3 Cause check method and remedy Same as 4230 error models TOH INV42Y INV38Y 100ÛC ...

Page 201: ...ror detection method If a short or an open is detected during thermostat ON the outdoor unit turns to anti restart mode for 3 minutes When the error is not restored after 3 minutes if restored the outdoor unit runs normally the outdoor unit makes an error stop Short detectable at 90 C 194 F or higher Open detectable at 40 C 40 F or lower Sensor error at gas side cannot be detected under the follow...

Page 202: ...n a short or an open of the thermistor is detected just before the restart of the outdoor unit the outdoor unit makes an error stop and the error code 5102 5103 5104 5105 5107 or 5115 will appear During 3 minute antirestart mode preliminary errors will be displayed on the LED display A short or an open described above is not detected for 10 minutes after the compressor start during defrost mode or...

Page 203: ... the unit makes an error stop and an error code 5111 5112 5115 or 5116 appears on the display Detection of a short or open circuit as described above is suspended during the defrost cycle and for 3 minutes after the operation mode is changed 3 Cause check method and remedy Reference Cause Check method and remedy 1 INV board failure If the problem recurs when the unit is put into operation replace ...

Page 204: ... definition and error detection method When a pressure sensor reading of 4 06 MPa 589 psi or above OR 0 098Mpa 142psi or below is detected error codes 5201 OR 5203 will appear The unit will continue its operation by using other sensors as a backup 3 Cause check method and remedy Cause Check method and remedy 1 High pressure sensor failure Refer to the following page s 8 5 1 Com paring the High Pre...

Page 205: ...8 10 Troubleshooting Inverter Problems Cause Check method and remedy 1 Contact failure Check the connector CNCT2 on the INV board for proper connection 2 INV output phase loss Check the output wire for proper connection 3 ACCT sensor failure Refer to the following page s 8 10 13 Simple Check on Inverter Circuit Components 4 Compressor failure Refer to the following page s 8 10 3 Checking the Compr...

Page 206: ...ated error codes refer to the following page s 8 10 Troubleshooting Inverter Problems Cause Check method and remedy 1 INV board failure Refer to the following page s 8 10 2 Checking the Inverter Board Error Detection Circuit 8 10 4 Checking the Inverter for Damage at No Load 8 10 5 Checking the Inverter for Damage during Compressor Operation 2 Compressor failure Refer to the following page s 8 10 ...

Page 207: ...heck method and remedy For inverter related error codes refer to the following page s 8 10 Troubleshooting Inverter Problems Cause Check method and remedy 1 ACCT sensor connection error Check the ACCT for proper connection Refer to the following page s 8 10 13 Simple Check on Inverter Cir cuit Components 2 ACCT sensor failure Refer to the following page s 8 10 13 Simple Check on Inverter Circuit C...

Page 208: ...er Problems 7 7 15 Error Code 5701 1 Error code definition Loose float switch connector 2 Error definition and error detection method Detection of the disconnected float switch open phase condition during operation 3 Cause check method and remedy 1 CN4F disconnection or contact failure Check for disconnection of the connector CN4F on the indoor unit control board Cause Check method and remedy 1 Op...

Page 209: ...ts with the same address are received Detail code 001 Detection of overlapped address in centralized control system Detail code 002 Detection of overlapped address in indoor unit system The address and attribute that appear on the remote controller indicate the controller that detected the error 3 Cause check method and remedy Cause Check method and remedy 1 Two or more of the following have the s...

Page 210: ...f the M NET transmission line 3 Cause check method and remedy Cause Check method and remedy 1 No voltage is applied to the M NET transmission line that AG 150A GB 50ADA PAC YG50ECA BAC HD150 are connected to Check if power is supplied to the M NET transmission line of the AG 150A GB 50ADA PAC YG50ECA BAC HD150 and correct any problem found 2 M NET transmission line to which AE 200 AG 150A GB 50ADA...

Page 211: ...o the noise on the transmission line 7 Voltage is not applied on the transmission line for centralized control in case of grouped indoor units connected to different outdoor units or in case of the system connected with MELANS 4 Check method and remedy NO Tightly reconnect the male power supply connector to the female power supply switch connector CN40 YES YES YES YES YES YES NO NO NO NO Is the tr...

Page 212: ... transmission processor or M NET processor Detail code 003 Communication error between device processor on circuit board and M NET processor The address attribute appeared on the display on the remote controller indicates the controller where an error oc curred 3 Cause check method and remedy Cause Check method and remedy 1 The transmission processor cannot be transmit ted as the short wavelength ...

Page 213: ...e address attribute appeared on the display on the remote controller indicates the controller which did not provide the response ACK 3 Cause check method and remedy Cause Check method and remedy 1 Incidental cause 1 Turn off the power source of the outdoor unit and turn it on again 2 Contact failure of transmission line of OC or IC 2 If the error is accidental it will run normally If not check the...

Page 214: ...ngle refrigerant system Grouped operation of multi ple refrigerant systems Types of indoor units experiencing problems Part of the indoor units IC are experiencing problems All indoor units IC in the same system are experiencing problems All indoor units IC are experiencing problems Troubleshooting prob lems for indoor units A Troubleshooting problems for indoor units A Troubleshooting prob lems f...

Page 215: ...er supply connector is connected to the female power supply switch connector CN40 for the transmission line for centralized control 1 Check voltage of the transmission line for central ized control 20 V or more Check 1 on the left Less than 20 V Check 2 on the left 2 Disconnection or shutdown of the power source of the power supply unit for transmission line 3 System controller MELANS malfunction ...

Page 216: ...K 3 Cause check method and remedy 1 Troubleshooting problems for LOSSNAY units Error display ME remote controller RC MA remote controller MA Types of refrigerant systems Single refrigerant system Grouped operation of multiple refrigerant systems Troubleshooting problems for LOSSNAY units Troubleshooting problems for LOSSNAY units Troubleshooting problems for all units A Cause Check method and reme...

Page 217: ...ms Single refrigerant system Grouped operation of mul tiple refrigerant systems Types of indoor units experiencing problems Part of the indoor units IC are experiencing problems All indoor units IC in the same system are experi encing problems All indoor units IC are experiencing problems Troubleshooting problems for ME remote controllers Troubleshooting prob lems for ME remote con trollers Troubl...

Page 218: ...oubleshooting problems for system controllers Error display ME remote controller RC MA remote controller MA Type of unit controller in error Part of the ME remote con trollers RC are experi encing problems All indoor units IC in the same system are experi encing problems All ME remote controllers RC are experiencing problems Troubleshooting problems for system controllers Troubleshooting prob lems...

Page 219: ...y the error codes listed in item 4 in the Cause col umn When no errors are present Indoor unit circuit board failure 4 The male power supply connectors on 2 or more outdoor units are connected to the female power supply switch connector CN40 for centralized control If an error occurs after the unit runs normally once the following causes may be considered Total capacity error 7100 Capacity code er...

Page 220: ...sting address which some indoor units have Use either of the following two methods for dele tion 2 Although the address of LOSSNAY has been changed af ter the interlock registration of LOSSNAY is made using ME remote controller the indoor unit is keeping the mem ory of the previous address 1 Address deletion by ME remote controller Delete unnecessary address information using the manual setting fu...

Page 221: ...ease of transmission line voltage signal by exceeding acceptable range of transmission wiring Farthest 200m 656ft or less Remote controller wiring 12m 39ft or less 4 The transmission line voltage signal is decreased due to erroneous sizing of transmission line Wire diameter 1 25mm2 AWG16 or more 4 Check method and remedy 1 When an error occurs during commissioning turn off the power sources for th...

Page 222: ... sends or receives the signals from the remote controller 4 Check method and remedy 1 Check for disconnected or loose transmission lines for the indoor units or MA remote controllers 2 Confirm that the power is supplied to the main power source and the remote controller line 3 Confirm that MA remote controller s capacity limit is not exceeded 4 Check the sub main setting of the MA remote controlle...

Page 223: ...ethod and remedy 1 Check for disconnected or loose transmission lines for the indoor units or MA remote controllers 2 Confirm that the power is supplied to the main power source and the remote controller line 3 Confirm that MA remote controller s capacity limit is not exceeded 4 Check the sub main setting of the MA remote controllers One of them must be set to MAIN 5 Diagnose the remote controller...

Page 224: ...d remedy 1 Check for disconnected or loose transmission lines for the indoor units or MA remote controllers 2 Confirm that the power is supplied to the main power source and the remote controller line 3 Confirm that MA remote controller s capacity limit is not exceeded 4 Check the sub main setting of the MA remote controllers One of them must be set to MAIN 5 Diagnose the remote controller describ...

Page 225: ...hat sends or receives the signals from the remote controller 4 Check method and remedy 1 Check for disconnected or loose transmission lines for the indoor units or MA remote controllers 2 Confirm that the power is supplied to the main power source and the remote controller line 3 Confirm that MA remote controller s capacity limit is not exceeded 4 Check the sub main setting of the MA remote contro...

Page 226: ...or the indoor units Cause Check method and remedy 1 Contact failure short circuit or miswiring converse wiring of in door outdoor unit connecting wire Check disconnecting or looseness of indoor outdoor unit connecting wire of indoor unit or outdoor unit Check all the units in case of twin triple quadruple indoor unit system 2 Defective transmitting receiving circuit of outdoor controller cir cuit ...

Page 227: ...ansmitting error Abnormal if 1 receiving is detected 30 times continuously though indoor controller board has transmitted 0 3 Cause check method and remedy Note Refer also to the Service Handbook for the indoor units Cause Check method and remedy 1 Defective transmitting receiving circuit of indoor controller board Turn the power off and on again to check If abnormality generates again replace ind...

Page 228: ... door outdoor unit connecting wire Check disconnecting or looseness of indoor outdoor unit connecting wire of all indoor units or outdoor units 2 Defective transmitting receiving circuit of outdoor controller cir cuit board Turn the power off and on again to check If abnormality generates again replace indoor controller board or outdoor controller circuit board Note other indoor controller board m...

Page 229: ...connecting wire of in door and outdoor units 2 Diameter or length of indoor outdoor unit connecting wire is out of specified capacity Check the following Diameter of the cables used for indoor outdoor lines maximum line distance between indoor and outdoor units max 50 m maximum line distance be tween indoor units daisy changed cables max 30 m and if flat cables such as VVF is used make sure they a...

Page 230: ...nit board When the model name set by the switch is differ ent from that of the unit connected turn off the power source of the outdoor and the indoor units and change the setting of the Qj capacity code 2 The model selection switches SW5 3 5 8 on the outdoor unit are set incorrectly Check the setting for the model selection switch on the outdoor unit Dipswitches SW5 3 5 8 on the outdoor unit contr...

Page 231: ...rror source address set by the switch SW2 on indoor unit board When the model name set by the switch is differ ent from that of the unit connected turn off the power source of the outdoor and the indoor units and change the setting of the capacity code The capacity of the indoor unit can be con firmed by the self diagnosis function SW1 operation of the outdoor unit Outdoor unit 2 The model selecti...

Page 232: ...the indoor outdoor transmission line TB3 4 Check the setting for the model selection switch on the outdoor unit Dipswitches SW5 7 on the outdoor unit control board 2 Disconnected transmission line from the outdoor unit or BC controller 3 Short circuited transmission line When 2 and 3 apply the following display will appear ME remote controller Nothing appears on the remote controller be cause it i...

Page 233: ...ot set to 51 100 Check that the outdoor unit and BC controller addresses are set to 00 or a number between 51 and 100 If the outdoor unit address is out of the valid range reset the address with the power to the outdoor unit turned off If the BC controller address is out of the valid range reset the address with the power to both the outdoor unit and BC controller turned off Error source Cause Che...

Page 234: ... is connected to the BC controller main ii The indoor unit address which is connected to the BC controller Sub N iii The indoor unit address which is connected to the BC controller Sub N 1 Address setting i ii iii ii and iii can be reversed Single branching Two branches merge Total port number Model total 54 96 Change the port No Is there a BC controller Sub Are 4 or more indoor units connected to...

Page 235: ...t off 1 Confirm that the power to the transmission booster is not cut off by the booster being connected to the switch on the indoor unit The unit will not function properly unless the transmission booster is turned on 2 Power resetting of the transmission booster and outdoor unit ĺReset the power to the outdoor unit 3 Wiring failure between OC and OS 2 Confirm that the TB3 on the OC and OS are pr...

Page 236: ...r connec tion 4 Check the connector CNTYP on the INV board for proper connection Detail code 16 1 Check the settings of SW5 3 through SW5 6 on the control board 2 Check the connector CNTYP5 on the control board for proper connec tion 3 Check the connector CNTYP2 on the control board for proper connec tion 4 Check the wiring between the control board and INV board Refer to the following page s 7 2 ...

Page 237: ...g Using Error Codes BC controller 1 Wiring fault 1 Check the connector TYP1 on the control board 2 Loose connectors short cir cuit contact failure 2 Check the settings of SW4 1 SW5 7 and SW5 8 on the control board 3 DIP SW setting error on the control board Error source Cause Check method and remedy ...

Page 238: ... CNTYP5 on the control board for proper connection 2 Check the connector CNTYP2 on the control board for proper connection 3 Check the wiring between the control board and INV board Refer to the following page s 7 2 1 Error Code 0403 4 Check the connector CNTYP on the INV board for proper connection Detail codes 56 66 1 Check the wiring between the control board and the Fan INV board Refer to the ...

Page 239: ... unit is for use with R22 Incorrect type of indoor units are connected The M NET connection adapter is connected to the indoor unit system in a system in which the Slim Model A control of units are con nected to the M NET Check the connected indoor unit model Check whether the connecting adapter for M NET is not connected to the indoor unit Connect the connecting adapter for M NET to the outdoor u...

Page 240: ...urement and Gauge Pressure 20 8 5 4 Low Pressure Sensor Configuration 63LS 21 8 6 Troubleshooting Solenoid Valve Problems 22 8 7 Troubleshooting Outdoor Unit Fan Problems 23 8 8 Troubleshooting LEV Problems 24 8 8 1 General Overview on LEV Operation 24 8 8 2 Possible Problems and Solutions 27 8 8 3 Coil Removal Instructions 28 8 9 Troubleshooting Problems with Major Components on BC Controller 30 ...

Page 241: ...Maintenance of Refrigerant Circuit Parts 65 8 13 2 Notes on Wiring Installation 66 8 13 3 Four way Valve Replacement Procedure Applicable to four way valves 21S4a and 21S4b 67 8 13 4 Replacement Procedure for the Check Valve Block Assembly 73 8 13 5 Compressor Replacement Procedure 80 8 13 6 Removal Instructions for the Control Box 82 8 13 7 Transformer box replacement instructions 84 8 13 8 Maint...

Page 242: ...0 240 VAC power supply cable Reversed connection of the wire for the MA remote controller and the M NET transmission line on the indoor unit 3 The number of the MA remote controllers that are connected to an indoor unit exceeds the allowable range 2 units 4 The length or the diameter of the wire for the MA remote controller are out of specification 5 Short circuit of the wire for the remote displa...

Page 243: ...ale power supply connectors on the multiple outdoor units are connected to the female power supply switch connector CN40 In the system to which the power supply unit for transmission lines is connected the male power supply connector is connect ed to the female power supply switch connector CN40 on the outdoor unit 4 Disconnected M NET transmission line on the indoor unit side 5 Disconnected wire ...

Page 244: ... the indoor unit and the indoor unit board CN2M or disconnected connector 6 Incorrect wiring for the MA remote controller Short circuited wire for the MA remote controller Disconnected wire for the MA remote controller No 2 and disconnected line to the terminal block Reversed daisy chain connection between groups Incorrect wiring for the MA remote controller to the terminal block for transmission ...

Page 245: ...door unit Does an error occur when the power is reset Check that no error occurs in other indoor units Check the indoor unit on which LED2 is lit All the indoor unit power failure All the indoor unit power failure Error display Error display Thermo is OFF Is operation possible Short circuit of the remote controller After turning the power on check whether HO PLEASE WAIT is displayed on the remote ...

Page 246: ...cted line to the terminal block The indoor transmission line is connected incorrectly to the transmission terminal block for centralized controller TB7 4 Disconnected transmission line on the remote controller 5 Remote controller failure 6 Outdoor unit failure For details refer to the following page s 8 15 Troubleshooting Problems Using the LED Status Indica tors on the Outdoor Unit 3 Check method...

Page 247: ... YES NO NO NO NO NO NO YES 1 1 Check LED1 on the indoor unit control board Is it lit When it is lit When it is off or cannot be checked Check for the change of LED display by operating dip switch for self diagnosis Check voltage of the power supply terminal on the indoor unit AC220V Check the fuse on the circuit board Melted Check 200V circuit for short circuit and ground fault Check the connectio...

Page 248: ...minal block for M NET line connection TB5 of the indoor unit and the male connector CN2M 7 The male power supply connectors on 2 or more outdoor units are connected to the female power supply switch connector CN40 for the transmission line for centralized control 8 Outdoor unit control board failure 9 Indoor unit control board failure 10 Remote controller failure Interlocking control with MELANS 1...

Page 249: ... wrong address is set to the outdoor unit Wrong switch setting Change it from ON to OFF A wrong address is set to the ME remote controller A wrong address is set to the indoor unit Wrong wiring of the M NET transmission line of the indoor unit Disconnected connector CN2M Correct the error Disconnected 17 30V ME remote controller 100 Check the address of the indoor unit to be coupled Indoor unit 10...

Page 250: ...oor units connected to different outdoor units are grouped 6 The power of the outdoor unit to be confirmed has been cut off 5 Check the power supply of the outdoor unit which is coupled with the unit to be confirmed 7 Transmission line is disconnected from the terminal block for central control system connection TB7 on the outdoor unit 6 Check that the transmission line for centralized control TB7...

Page 251: ...insufficient capacity SW4 setting SW6 10 OFF 2 Check temperature difference between the evaporat ing temperature Te and the target evaporating tem perature Tem with self diagnosis LED Note Higher Te than Tem causes insufficient capacity SW4 setting SW6 10 OFF Note Protection works and compressor frequency does not rise even at higher Te than Tem due to high discharge temperature and high pressure ...

Page 252: ...or unit inlet temperature is excessively low Less than 15 C 59 F WB Check the inlet air temperature and for short cycling Change the environment where the indoor unit is used 9 Compressor failure The amount of circulating refrigerant decreases due to refrigerant leak in the compressor Check the discharge temperature to determine if the refrigerant leaks as it rises if there is a leak 10 BC control...

Page 253: ...ing the High Pressure Sensor Mea surement and Gauge Pressure Note Higher inlet pressure by the high pressure sensor than the actual pressure causes insufficient capac ity SW4 setting SW6 10 OFF 2 Check the difference between the condensing tem perature Tc and the target condensing tempera ture Tcm with self diagnosis LED Note Higher Tc than Tcm causes insufficient capacity SW4 setting SW6 10 OFF N...

Page 254: ... blockage in the extended section is difficult to locate operate the unit in the cooling cycle and follow the same procedures that are used to locate the blockage of pipe during cooling operation ĺ Remove the blockage in the pipe 9 The indoor unit inlet temperature is excessively high exceeding 28 C 82 F Check the inlet air temperature and for short cy cling Change the environment where the indoor...

Page 255: ...history on LED display with SW4 2 Abnormal discharge air temperature 3 Heatsink thermistor failure ĺ Refer to the reference page for each error mode Display the indoor piping temperature table with SW4 to check whether the freeze proof operation runs properly and check the temperature 4 Thermistor failure 5 Pressure sensor failure Refer to the following page s 10 LED Status Indi cators on the Outd...

Page 256: ...ot a problem when the shield of the transmission line is grounded 2 The sectional voltage level of transmission signal should be as follows Cause Erroneous operation Error code Error code definition Noise interference on the transmission line Signal is transformed and will be misjudged as the signal of another address 6600 Address overlap Transmission wave pattern is transformed due to the noise c...

Page 257: ... no grounding is provided the noise on the transmission line can not escape leading to change of the transmission signal 6 Check the treatment meth od of the shield of the transmission line for cen tralized control The transmission cable for centralized control is less subject to noise interference if it is grounded to the outdoor unit whose power jumper cable was moved from CN41 to CN40 or to the...

Page 258: ...enerated on the transmission line and the communication between the MA remote controller and the indoor unit is interrupted for 3 minutes in a row MA transmission error 6831 will occur 2 Confirmation of transmission specifications and wave pattern A B No polarity Across terminal No 1 2 Power supply 9V to 12VDC Satisfies the formula 12 msec bit 5 Voltage among terminals must be between DC9 and 12 V...

Page 259: ...re displayed on self diagnosis LED1 while the sen sor is running Compare them by MPa psi unit 1 When the difference between both pressures is within 0 098MPa 14psi both the high pressure sensor and the control board are normal 2 When the difference between both pressures exceeds 0 098MPa 14psi the high pressure sensor has a problem perfor mance deterioration 3 When the pressure displayed on self d...

Page 260: ...utput and the value of this voltage will be converted by the microcomputer The output voltage is 0 071V per 0 098MPa 14psi The pressure sensor on the body side is designed to connect to the connector The connector pin number on the body side is different from that on the control board side Body side Control board side Vcc Pin 1 Pin 3 Vout Pin 2 Pin 2 GND Pin 3 Pin 1 0 0 5 73 1 0 145 1 5 218 2 0 29...

Page 261: ...the low pressure sensor has a problem performance dete rioration 3 When the pressure displayed on the self diagnosis LED1 does not change the low pressure sensor has a problem 3 Remove the low pressure sensor from the control board to check the pressure with the self diagnosis LED1 display 1 When the pressure displayed on the self diagnosis LED1 is between 0 and 0 098MPa 14psi the low pressure sen...

Page 262: ...t and the value of this voltage will be converted by the microcomputer The output voltage is 0 173V per 0 098MPa 14psi The pressure sensor on the body side is designed to connect to the connector The connector pin number on the body side is different from that on the control board side Body side Control board side Vcc Pin 1 Pin 3 Vout Pin 2 Pin 2 GND Pin 3 Pin 1 0 0 2 29 0 4 58 0 6 87 0 8 116 1 0 ...

Page 263: ...temperatures check that LEV2a and LEV2b are open Refer to 8 8 Trou bleshooting LEV Problems Do not give an impact from outside as the outer hull will be deformed leading to the malfunction of the inner valve 2 In case of SV1a Bypass valve This solenoid valve opens when powered Relay ON 1 At compressor start up the SV1a turns on for 4 minutes and the operation can be checked by the self diagnosis L...

Page 264: ...e or when the indoor unit operation capacity is low the revolution of the fan may change If the fan does not move or it vibrates Fan board problem or fan motor problem is suspected When checking the fan motor for problems by shutting down the power be sure to disconnect the motor wire from the fan board If a short circuited fan board malfunctions it will keep the fan motor from rotating smoothly F...

Page 265: ...d LEV indoor unit LEV and BC controller LEV 3 KB type 2 Control boards outdoor unit and BC controller LEV BC controller LEV1 LEV3 J JA KA types LEV4 and the outdoor unit LEV LEV2a 2b and 2d Note The connector numbers on the intermediate connector and the connector on the control board differ Check the color of the lead wire to judge the number Control board Drive circuit LEV M 5 5 2 2 1 1 3 3 4 4 ...

Page 266: ...hen the output is open phase or remains ON the motor cannot run smoothly and rattles and vibrates When the power is turned on the valve closing signal of 2200 pulses will be output from the indoor board to LEV to fix the valve position It must be fixed at point A When the valve operates smoothly no sound from LEV or no vibration occurs however when the pulses change from E to A in the chart or the...

Page 267: ...osed 8 7 6 5 4 3 2 1 8 1 When the LEV opening angle does not change all the output phases will be off 2 When the output is open phase or remains ON the motor cannot run smoothly and rattles and vibrates Output phase number Output state Upon power on the indoor unit circuit board sends a 520 pulse signal to the indoor unit LEV to determine the valve position and always brings the valve to the posit...

Page 268: ... if resistance is 150ȍ 3 Replace the LEV coils Indoor unit and BC controller LEV1 GA1 HA1 J JA KA type LEV3 J JA KA type Measure the resistance between coils red white red or ange brown yellow brown blue with a tester When the resistance is in the range of 46ȍ 3 the LEV is normal Replace the LEV coils Outdoor LEV1 LEV4 LEV9 Incomple seal ing leak from the valve When checking the refrigerant leak f...

Page 269: ... move then pull out the coils toward the top If the coils are pulled out without the body gripped undue force will be applied and the pipe will be bent 3 Installing the coils Fix the body tightly at the bottom Part A in the figure so that the body will not move then insert the coils from the top and insert the coil stopper securely in the pipe on the body If the coils are pushed without the body g...

Page 270: ...ter checking that the stopper is re moved pull up and out the coil When removing the coil hold the LEV body securely to prevent undue force from being placed on the pipe and bending the pipe 3 Installing the coil Securely hold the bottom of the LEV Part A in the figure insert the coil from above and turn the coil until the coil stopper is properly installed on the LEV body When removing the coil h...

Page 271: ...the transmission line Replace the pressure sensor Replace the board Restore contact failure Check whether the contact of the pressure sensor connector in trouble is not faulty OK OK Check that the difference between each detected pressure is 0 098MPa 14psi or less OK Both the board and the pressure sensor are normal OK Is Pd P1 P3 Ps Remove the pressure sensor connector from the board and check th...

Page 272: ... 3 4 5 6 7 8 9 10 PS3 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 PS3 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 PS3 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 SW6 setting value PS3 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 PS3 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 PS3 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 PS3 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ...

Page 273: ...corresponding to the resistance measured by the thermistor and the temperature measured by a commercially available thermometer and check whether there is no difference between them Insert the connector of the thermistor in trouble into the board check the sensor inlet temperature on the LED monitor and check the temperature difference START Normal Troubleshooting instructions for thermistor Repla...

Page 274: ...Bypass outlet temperature Bypass inlet temperature Bypass inlet temperature Bypass outlet temperature Bypass inlet temperature Bypass inlet temperature Bypass outlet temperature Bypass inlet temperature Bypass inlet temperature J JA KA Standard main KB Sub 1 KB Sub 2 KB Sub 3 ON 1 2 3 4 5 6 7 8 9 10 SW6 setting value ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 ...

Page 275: ... inlet temperature KB Sub 9 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5...

Page 276: ...et temperature KB Sub 11 KB Sub 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 Measurement data SW4 setting value Symbol SW6 setting value ON 1 2 3 4 5 6 7 ...

Page 277: ...ck that SVA and SVC are ON Check that SVA and SVC are OFF Cooling or heating operation Note 2 Heating operation Check whether LEV3 is controlling superheat Check LEV1 Check LEV3 Check SVA and SVC Check SVB LEV1 is fully open Check whether LEV 3 is controlled by the value of the differential pressure LEV1 is fully closed Note 3 Note 2 Note 3 YES NO Cooling operation Superheat control OK Differentia...

Page 278: ...or more When LEV is fully open measure the temperature at the upstream and downstream pipes of LEV and make sure that there is no temperature difference When LEV is fully closed check that there is no refrigerant flowing sound Phenomena Cooling only Cooling main Heating only Heating main Non cooling SH12 small SC11 small SC16 small branch pipe SC small BC controller sound Non cooling and non heati...

Page 279: ... main SH12 is large SH12 20 C 36 F Heating only Heating main Difference between high pressure P1 and interme diate pressure P3 is small 0 3 to 0 4MPa 44 to 58psi Inclined to open Cooling only Cooling main SC16 and SH12 are small SC16 3 C 5 4 F SH12 3 C 5 4 F Heating only Heating main Difference between high pressure P1 and interme diate pressure P3 is large 0 3 to 0 4MPa 44 to 58psi LEV4 JA and KA...

Page 280: ...6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 ...

Page 281: ...ted on the connector and check the colors of the lead wires visually Intermediate connector Control board Check that no refrigerant leaks from LEV Pull out the connector from the board and check that the electricity runs with a tester The wiring side of CN05 and 07 Among 1 3 and 5 and among 2 4 and 6 Check the resistance between each coil with a tester between red and white red and orange brown an...

Page 282: ...rresponds with the operation mode Corresponds Measure the temperature at the upstream and downstream pipes of the solenoid valve When the solenoid valve is ON There is no temperature difference When the solenoid valve is OFF There is a temperature difference OK Remove the solenoid valve coil and check that there is a suction force There is a suction force Note 2 Note 2 Note 2 Measure the temperatu...

Page 283: ... mode SVM1 SVM1b SVM1 and SVM1b turn on or off according to the indoor unit operation mode 2 SVA SVB SVC Measure the temperature at the upstream and downstream pipes and of SVA Measure the temperature at the upstream and downstream pipes and of SVB Mode Cooling Heating Stopped Defrost Fan Port SVA ON OFF OFF OFF OFF SVB OFF ON OFF OFF OFF SVC ON OFF OFF OFF ON Operation mode Cooling only Cooling m...

Page 284: ... chapter 8 43 8 Troubleshooting Based on Observed Symptoms 8 9 5 BC Controller Transformer Before measuring the resistance pull out the connector Normal Abnormal CNTR 1 3 about 58 ȍ Open phase or shorting CN03 1 3 about 1 6 ȍ CNTR CN03 BC controller control board Red White Red Red ...

Page 285: ...fter disconnecting the relay connectors of the outdoor unit fan RYFAN1 and RYFAN2 Before plugging in or unplugging connectors check that the outdoor unit fan is not rotating and that the voltage across Pin 1 and Pin 5 of connector RYPN is 20 VDC or less The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions Refer to the wiring nameplate...

Page 286: ...iolently at all times or makes an abnormal sound Check the inverter frequency on the LED monitor If the frequency indi cates that the units are in operation refer to the following page s 8 10 7 Checking the Fan Board Error Detection Circuit at No Load 8 10 8 Checking the Fan Board for Damage at No Load 8 10 9 Checking the Fan Board for Damage with Load 9 Noise is picked up by the peripheral device...

Page 287: ...106 and 107 Replace the INV board 2 Disconnect the inverter output wires from the compressor terminals U V W 1 2 Logic error Error code 4220 Detail code No 111 Replace the INV board 3 Apply power supply 3 ACCT sensor circuit failure Error code 5301 Detail code No 117 Replace the INV board 4 Put the outdoor unit into operation 4 IPM open Error code 5301 Detail code No 119 Normal Items to be checked...

Page 288: ...as sta bilized 4 There is no voltage imbalance between the wires Normal When done checking set SW7 1 on the MAIN board back to as it was Items to be checked Phenomena Remedy Put the outdoor unit into opera tion Check the inverter output volt age at the compressor terminal after the inverter output frequen cy has stabilized INV42Y 38 1 Overcurrent related problems occur im mediately after compresso...

Page 289: ...l code 135 Normal When done checking reconnect all connectors as they were Unless they are properly reconnected cur rent sensor fault will not be resolved 3 Turn on the breaker 4 Operate the unit Items to be checked Phenomena Remedy 1 Stop the unit Turn off the breaker Be sure to turn off the power 1 An error other than the current sen sor error 5305 5306 Detail code 135 is detected within 30 seco...

Page 290: ...e fan motor 3 Operate unit 3 Sensor error during operation Check code 5305 5306 Detail code 135 136 a Check for disconnection of fan in verter output wiring and for broken wiring b If the error is not associated with any of the items above replace the fan board c Change fan motor if Fan board change doesn t resolve issue 4 Voltage overload error Check code 4225 4226 Detail code 109 a Check for gus...

Page 291: ...eaker 2 Perform Meg check between the terminals on the power terminal block TB1 Zero to several ohm or Meg failure Check each part and wiring Refer to the following page s 8 10 13 Simple Check on Inverter Circuit Compo nents IGBT module Rush current protection resistor Electromagnetic relay DC reactor 3 Turn on the power again and check again 1 Main power breaker trip 2 No remote control display 4...

Page 292: ... Replace with a regulation earth leakage breaker 2 Check the resistance at the power supply terminal block TB1 with a megger Failure resistance value Check each part and wiring Refer to the following page s 8 10 13 Simple Check on Inverter Circuit Compo nents IGBT module Rush current protection resistor Electromagnetic relay DC reactor 3 Disconnect the compressor wir ings and check the resistance ...

Page 293: ...nals DC reactor DCL Measure the resistance between terminals 1ȍ or lower almost 0 ȍ Measure the resistance between terminals and the chassis Current sensor ACCT Disconnect the wiring connector from CNCT2 and measure the inter teminal resistance 280ȍ 30ȍ Between pins 1 and 2 U phase pins 3 and 4 W phase 4 3 2 1 Coil Contact INV board X901 X902 Across pins 1 2 INV board FT P1 and FT P2 Faston termin...

Page 294: ...at the resistance is not open ȍ or not shorted to 0 ȍ The values are for reference and the margin of errors is allowed The result that is more than double or half of the result that is measured at the same measurement point is not allowed Disconnect all the wiring connected the INV board and make the measurement 2 Tester restriction Use the tester whose internal electrical power source is 1 5V or ...

Page 295: ...utline drawing INV42Y Reference resistance value Black SC P CN N SC L1 SC L2 SC L3L Red SC P 5 200 ȍ 5 200 ȍ 5 200 ȍ CN N SC L1 5 200 ȍ SC L2 5 200 ȍ SC L3 5 200 ȍ Black SC P1 CN N SC U SC V SC W Red SC P1 5 200 ȍ 5 200 ȍ 5 200 ȍ CN N SC U 5 200 ȍ SC V 5 200 ȍ SC W 5 200 ȍ SC L1 SC L2 SC L3 SC U CN N SC P SC P1 SC V SC W ...

Page 296: ... Reference resistance value Black SC L1 SC L2 SC L3L SC PL SC N1 Red SC L1 5 200 ȍ SC L2 5 200 ȍ SC L3 5 200 ȍ SC PL 5 200 ȍ 5 200 ȍ 5 200 ȍ SC N1 Black SC P1L SC N2 SC D1 SC D2 SC D3 Red SC P1L 5 200 ȍ 5 200 ȍ 5 200 ȍ SC N2 SC D1 5 200 ȍ SC D2 5 200 ȍ SC D3 5 200 ȍ SC L3 SC D1 SC U SC D2 SC V SC D3 SC W SC L2 SC L1 SC N2 SC P1L SC PL SC N1 ...

Page 297: ... inside the duct To remove the duct follow the procedures 1 through 2 below Reassemble the components in the reverse order as they were removed 1 Remove the front service panel Service panel Top section of the duct Remove the two screws holding the top section of the duct 2 Remove the upper section of the duct by unscrewing the screws on the control box shown in the figure below Check inside the d...

Page 298: ...roller Indoor unit TB1 AC Power source YNU 460 VAC Power supply terminal block Outdoor unit CN40 Inverter board Rectifier Rectifier 72C DCL 5 V power supply Smoothing capacitor Inverter Microcomputer Inverter drive circuit Compressor Noise filter Fuse Surge protector Solenoid valve Four way valve Control board Fuse Microcomputer FAN board Fuse Heat exchanger fan Microcomputer 5Vpowersupply FAN boa...

Page 299: ...ire TB1 AC Power source TNU 208 230 VAC Power supply terminal block Outdoor unit CN40 Inverter board Rectifier Rectifier 72C DCL 5 V power supply Smoothing capacitor Inverter Microcomputer Inverter drive circuit Compressor Noise filter Fuse Fuse Surge protector Solenoid valve Four way valve Control board Fuse Microcomputer FAN board Fuse Heat exchanger fan Microcomputer 5Vpowersupply FAN board Fus...

Page 300: ...m TB3 Check whether the male connector is connected to the female power supply connector CN40 Connected Check voltage of terminal block for centralized control TB7 Check voltage of TB7 by removing transmission line from TB7 Check the voltage across pins 3 and 4 of CNPW on the control board Check the voltage across pins 1 and 2 of CNPW on the control board Check the voltage across pins 1 and 2 of C...

Page 301: ... Any loose screws NO Tighten loose screws Replace the noise filter Check the power supply wiring and the main power supply and correct any problems found Turn the power supply back on Check the wiring between the noise filter board and TB1 of power supply terminal block for proper connections Check the voltage across L1 and L2 of power supply terminal block TB1 Check for conductivity between TB11 ...

Page 302: ... whether the male connector is connected to the female power supply connector CN40 Connected Check voltage of terminal block for centralized control TB7 Check voltage of TB7 by removing transmission line from TB7 Check the voltage across pins 3 and 4 of CNPW on the control board Check the voltage across pins 1 and 2 of CNPW on the control board Check the voltage across pins 1 and 2 of CN600 on the...

Page 303: ... loose screws NO Tighten loose screws Replace the noise filter Check the power supply wiring and the main power supply and correct any problems found Turn the power supply back on Check the wiring between the noise filter board and TB1 of power supply terminal block for proper connections Check the voltage across L1 and L2 of power supply terminal block TB1 Check for conductivity between TB12 and ...

Page 304: ...low pressure pipe and the service ball valve BV2 on the high pressure pipe on the outdoor unit 7 Collect the refrigerant that remains in the extended pipe for the indoor unit Do not discharge refrigerant into the atmosphere when it is collected 8 Repair the leak 9 After repairing the leak vacuum 1 the extension pipe and the indoor unit 10 To adjust refrigerant amount open the ball valves BV1 and B...

Page 305: ...r units and stop the compressor 1 To stop all the indoor units and the compressors turn SW4 769 on the outdoor control board from ON to OFF 2 Check that all the indoor units are stopped 3 Close the ball valves BV1 and BV2 4 Collect the refrigerant that remains inside the indoor unit Do not discharge refrigerant into air into the atmosphere when it is collected 5 Repair the leak 6 After repairing t...

Page 306: ... in place with a cable tie 6 Remove the drain pan by unscrewing the two screws See Figure 2 Be sure to remove the two rod holders holding the check joints to the drain pan Figures 2 and 3 show the cable ties to be cut 7 Remove the two cable straps holding the weak electrical wiring and the two cable straps holding the strong electrical wiring from the control box See Figure 4 8 Place the excess we...

Page 307: ...R WIRE TRANSFORMER BOX WIRE YNU Fix the wires in place to leave no space between the rubber bushes and the wires Fix the wires in place to leave no space between the notches on the rubber bushes and the wires Fix the wires in place with cable straps HIGH VOLTAGE WIRE Fix the wires in place with cable straps SENSOR WIRE LEV WIRE Cable strap UNUSED LEFT VIEW TOP LEFT VIEW BOTTOM CONTROL BOX CONTROL ...

Page 308: ... use Rubber spacer band Compressor cover top Compressor cover front Figure 2 Figure 1 Cable tie TH4 TH15 Figure 3 Compressor cover left Rubber bush Figure 4 Explained below is the procedure for replacing four way valve 21S4a on the left when seen from the front of the unit and four way valve 21S4b on the right when seen from the front of the unit Secure sufficient work space before starting mainte...

Page 309: ...four way valves 21S4a and 21S4b Use the parts included with the four way valve After being removed leave the pipes at the bottom inside the unit Once removed from the unit it will be difficult to re place the pipes Notes on replacing refrigerant circuit components four way valve solenoid valve and LEV Be sure to perform non oxidized brazing Before heating the pipes wrap the refrigerant circuit com...

Page 310: ...Cut the pipe with an expanded end that is included with four way valve 21S4a to the same length as the pipe that was removed from the on site pipe See Figure 11 12A Mount four way valve 21S4a to the pipe below four way valve 21S4a and on the back A total of four areas require brazing including the area indicated in 11A and the areas indicated in Figure 12 Figure 9 Figure 10 Figure 11 Figure 12 Whe...

Page 311: ...ow four way valve 21S4a and in the middle by brazing at the three areas shown in Figure 13 14A Install the pipe below four way valve 21S4a and on the front by brazing at the three areas shown in Figure 14 This step completes the replacement procedure for four way valve 21S4a Re place the components that were removed as they were Figure 13 Figure 14 Use the parts included with four way valve 21S4a ...

Page 312: ...the pipes at the bottom inside the unit Once removed from the unit it will be difficult to re place the pipes A cap for sealing the refrigerant pipe is included with the replacement kit that contains four way valve 21S4b Replace the cap with the one included with the four way valve Replacement procedure for the four way valve 21S4b 15B Cut the pipe below four way valve 21S4b and in the middle with...

Page 313: ... valve 21S4b horizontal to four way valve 21S4a as shown in 10A 20B Install the pipe below four way valve 21S4b and on the front by brazing at the two areas shown in Figure 20 This step completes the replacement procedure for four way valve 21S4b Re place the components that were removed as they were Severed pipe Area to be brazed Area to be brazed Area to be brazed Area to be brazed Pipe diameter...

Page 314: ...e 2 3 Cut the two tie bands holding TH4 and TH15 and remove the wiring from the rubber bush on the left compressor cover See Figure 3 4 Remove the left compressor cover by unscrewing the two screws See Figure 4 5 Remove the saddle and the rubber spacers on the compressor by unscrewing the screw See Figure 5 6 Remove the coils coil covers pipe covers and adjacent wirings of the four way valves sole...

Page 315: ...ting the pipes wrap the refrigerant circuit components with a wet towel to keep the temperature of the components from rising above 120 C After brazing is done check that the brazing is done properly and check for leaks before vacuum drying the pipes Direct the brazing torch flame away from the wiring and sheet metals inside the unit not to damage them Wet felt sheets listed below or its equivalen...

Page 316: ...1 to remove LEV4 assembly See Figure 11 Figure 11 Injection pipe Injection pipe LEV4 Rubber spacer LEV4 Remove the braze here Remove the braze here Cut the pipe here The replacement parts for this part is included with the replacement kit that contains check valve block assembly Use the pipe included with the check valve Cut the pipe here Leave the rubber spacer attached Figure 12 LEV2a and LEV2b ...

Page 317: ...ur way valve 21S4a and 21S4b assemblies Remove the braze here Four way valve 21S4b LEV2d Four way valve 21S4a Remove the braze here Cut the pipe here Cut the pipe here Remove the braze here Remove the braze here Remove the braze here Remove the braze here Cut the pipe here Cut the pipe here Four way valve 21S4b Four way valve 21S4b The replacement parts for this part is included with the replaceme...

Page 318: ...ea to be brazed Remove the braze here Check valve Check valve block Screws to be removed Screws to be removed Check valve block assembly Replacement parts Position the pipe perpendicular to the horizontal plane of the sheet metal when seen from above and braze it on 53 Screws to be removed Check valve block assembly Figure 16 1 16 Re place the four way valves 21S4a and 21S4b that were removed in s...

Page 319: ... Re place the check valve block assembly that was replaced in step 15 2 areas to be brazed 2 screws See Figure 18 Four way valve 21S4b Four way valve 21S4a Area to be brazed Screw position Cut the pipe here Cut the pipe here Severed pipe Pipe diameter φ19 05 ID of the pipe with an extended end φ22 2 Pipe diameter φ19 05 ID of the pipe with an extended end φ19 05 Cut the pipe with an expanded end t...

Page 320: ...e Figure 20 Four way valve 21S4a Four way valve 21S4a LEV2d Check valve block Area to be brazed Four way valve 21S4b Four way valve 21S4b Area to be brazed Area to be brazed Area to be brazed Area to be brazed Area to be brazed Area to be brazed Area to be brazed Area to be brazed LEV2d Replace the pipe that was cut in step 13 with the pipe included with the check valve block assembly Figure 20 Ru...

Page 321: ...the left compressor cover See Figure 3 4 Remove the right and left compressor covers by unscrewing the four screws See Figure 4 5 Remove the saddle and the rubber spacers on the compressor by unscrewing the screw See Figure 5 6 Remove the cover of the compressor terminal block box mounting support metal and the mounting plate by unscrewing the two screws See Figure 6 7 Remove thermal insulation 1 ...

Page 322: ...d then remove the braze See Figure 10 Do not force the injection pipe to deform 11 Remove the compressor discharge pipe by cutting the pipe where indicated in Figure 11 or by removing the braze Figure 11 Damper and cable tie Pipe cover Cut the suction pipe here Cut the compressor discharge pipe here Figure 10 Remove the braze here Remove the two pipe covers Save the pipe covers for later use S mod...

Page 323: ...ng pipes Be sure to perform non oxidized brazing Before heating the pipes wrap the refrigerant circuit components with a wet towel to keep the temperature of the components from rising above 120 C After brazing is done check that the brazing is done properly and check for leaks before vacuum drying the pipes Direct the brazing torch flame away from the wiring and sheet metals inside the unit not t...

Page 324: ...t Notes on replacing the control box when replacing the refrigerant cooling pipes Be sure to perform non oxidized brazing Before heating the pipes wrap the refrigerant circuit components with a wet towel to keep the temperature of the components from rising above 120 C After brazing is done check that the brazing is done properly and check for leaks before vacuum drying the pipes Direct the brazin...

Page 325: ...igure 2 1 Ensure there is adequate work space See 8 13 1 2 Remove the control box cover 5 screws as shown in Fig 1 3 Unstrap the cable straps holding the transformer box wiring and disconnect the wiring connectors and the grounding wire 5 cable straps 3 connectors and 1 grounding screw as shown in Fig 2 Connector Cable strap Cable strap Cable strap Cable strap Relay connector Grounding screw ...

Page 326: ...hown in the figure 3 screws as shown in Figure 3 5 Remove the transformer box Figure 4 6 Lift the transformer box to the position as shown in the figure move the box to the designated position and screw it down 3 screw as shown in Figure 5 Use caution not to damage the heat exchanger fins or pipes and wires in the adjacent areas when replacing the transformer box Transformer box Screw down 3 locat...

Page 327: ...gure 2 3 Cut the cable tie unscrew the screw and pull the drain cover out to the right See Figure 3 4 Remove the two rod holders holding the check joints in place using a wrench See Figure 4 5 Remove the drain pan by unscrewing the two screws See Figure 5 6 Clean the drain pan and the drain pan cover See Figure 6 Remove dust and dirt from the drain groove Front panel Fin guard left Fin guard right...

Page 328: ...n pan See Figures 9 and 10 4 Thread a cable tie through the rectangle hole on the screwed down drain cover and hold the silicon tube and the defrost pipe together in place See Figure 11 5 Screw down the fin guards center pillar and front panel with 14 screws See Figure 12 Drain pan Silicon tube Defrost pipe Defrost pipe Cable tie Check joint Rod holders Fin guard left Fin guard right Center pillar...

Page 329: ...he drain pan cover make sure that the silicon tube is properly placed on the defrost pipe and then fix the drain pan cover in place with a cable tie 6 Remove the drain pan by unscrewing the 2 screws See Figure 3 Be sure to remove the two rod holders holding the check joints to the drain pan See Figure 4 7 Remove the cover from the control box by unscrewing the 5 screws See Figure 5 8 Remove the ca...

Page 330: ...e removing the protective tube After removing the protective tube Unit wiring Cable tie Protective tube Panel heater wiring Unit wiring Connector Panel heater wiring Right fin guard sold separately Figure 7 Right Figure 7 Rear Figure 7 Left Figure 8 Right Figure 8 Rear Figure 8 Left Rear fin guard sold separately Rear wiring cover Rear wiring cover Rear wiring cover Left fin guard sold separately ...

Page 331: ...at they do not interfere with the replacement of the heat exchanger 15 Remove the front pillar by unscrewing the 7 screws See Figure 12 16 Disconnect the TH7 sensor holder from the front pillar See Figure 12 Rear 17 Remove the TH7 wiring from the heat exchanger by cutting the cable tie See Figure 13 Use the supplied spacers Use the spacers 60 D x 250 W x 60 H when replacing the heat exchangers for...

Page 332: ... the right and left panels See Figure 15 Right and Left 20 Remove the left front pillar by unscrewing the 9 screws See Figure 15 Front and Left 21 Remove the right front pillar by unscrewing the 5 screws See Figure 15 Front and Right Use the supplied spacers Use the spacers 60 D X 250 W X 60 H when replacing the heat exchangers for the maintenance of the accumulator and the pipes Right frame Front...

Page 333: ...rant circuit components heat exchanger Be sure to perform non oxidized brazing After brazing is done check that the brazing is done properly and check for leaks before vacuum drying the pipes Direct the brazing torch flame away from the wiring and sheet metals inside the unit not to damage them Place the wet felt sheets listed below or their equivalents around the areas to be brazed to protect the...

Page 334: ...the right rear pillar See Figure 18 To remove the rear heat exchanger loosen 4 screws on the back of the right rear pillar See Figure 19 Remove the screw holding the pillar to the rear heat exchanger support Loosen the screws Unscrew the screws Removing the front heat exchanger Figure 18 Removing the rear heat exchanger Figure 19 24 Remove the heat exchanger by diagonally lifting it up using cauti...

Page 335: ...sportation 26 Re place the front and the rear heat exchangers in the reverse order as they were removed Re place the components that were removed as they were Re place each unit wiring according to the wiring color and identification label attached to the wiring protective tube shown in the table below Figure 22 Figure 23 Front heat exchanger Front heat exchanger support Unscrew the screw Rear hea...

Page 336: ...l box replacement procedure for details 4 Remove the right and inside right panels by unscrewing the eight screws See Figures 1 and 2 5 Unscrew the two screws from the right accumulator fixing plate See Figures 3 and 5 6 Unscrew the two screws from the rear accumulator fixing plate See Figures 3 and 4 7 Remove the four screws from the accumulator legs See Figure 6 Figure 1 Figure 2 Figure 5 Figure...

Page 337: ...nts with a wet towel to keep the temperature of the components from rising above 120 C After brazing is done check that the brazing is done properly and check for leaks before vacuum drying the pipes Direct the brazing torch flame away from the wiring and sheet metals inside the unit not to damage them Wet felt sheets listed below or its equivalent and place them around the areas to be brazed to p...

Page 338: ...the top panel by unscrewing the 10 fixing screws Figure 4 4 Remove the service panel 2 by unscrewing the two fix ing screws Figure 4 Work procedure Explanatory figure 1 To check the inside of the control box re move the two lock nuts on the control box cover 1 Check the terminal connection of the power wire or of the transmission line 2 Check the transformer 3 Check the address switch 2 When the c...

Page 339: ...scraped leading to water leakage Installing the bottom panel 1 Of the four screws indicated with triangles in Figure 1 partially tighten the two screws that are diagonally locat ed either 1 and 3 or 2 and 4 2 Thread the screw into the double snowman shaped hole move the panel in the opposite direction as when it was removed in step 3 above set the screw into the smaller circle and tighten the scre...

Page 340: ...ector to the control board When gas leaks from the pressure sensor repair the leak and follow the instructions above if required CMB P1016NU KA1 Work procedure Explanatory figure 1 Remove the service panel 2 Replace the LEV in trouble Secure enough service space in the ceiling for welding operation and conduct the work carefully If required dismount the unit from the ceiling and conduct the work C...

Page 341: ...r Supply Circuit 2 If the LED error display becomes lit when the power is turned on with all the connectors on the control board except CNDC disconnected there is a problem with the wiring to those connec tors or with the connectors themselves 3 If nothing appears on the display under item 2 above AND the voltage between pins 1 and 3 of CNDC is within the range between 220 VDC and 380 VDC control ...

Page 342: ...d Storage Functions 4 9 2 1 Preparation 4 9 2 2 Storing Data on a USB Memory Stick 4 9 2 3 Collecting Operation Data 6 9 2 4 Precautions 7 9 3 Software Rewrite Function on the USB 8 9 3 1 Preparation 8 9 3 2 Rewriting Software 8 9 3 3 Precautions 9 9 4 Maintenance LED Display and Troubleshooting 10 9 4 1 Maintenance LED Display Content List 10 9 4 2 Troubleshooting 13 ...

Page 343: ...HWE18220_GB ...

Page 344: ...d andstored in the flash memory in the control board of the outdoor unit OC The data can be transferred and stored in a USB memory stick 2 Software rewrite function The software on outdoor units can be rewritten using a USB memory stick For detailed information about each function refer to Section 9 2 Operation Data Collection and Storage Functions and Sec tion 9 3 Software Rewrite Function on the...

Page 345: ...iew 2 chapter 9 HWE18220_GB 9 USB Function 9 1 2 System Structure 1 Control board on the outdoor unit CN601 SWP3 Push switch Function setting LED301 Maintenance LED CNUSB USB memory connector SW4 Dip switch SW6 10 SW7 9 ...

Page 346: ...d in FAT 32 Without a security function 2 Portable battery charger Use a portable battery charger that meets the following specifications for rewriting the software USB 2 0 compatible Voltage and amperage rating of 5 V and 2 1 A MAX A LEAD WIRE ASSY USB is required to connect the control board and the portable charger Use a cable that meets the following specifications Type A male Male XA connecto...

Page 347: ...a on a USB memory stick Data can be stored to a USB memory stick either with the main power to the outdoor unit turned on Method 2 or off Method 1 For safety reasons it is recommended to store the data on a USB memory stick with the main power to the outdoor unit turned off Method 1 If turning off the power is not feasible take appropriate measures to ensure safety Method 1 recommended Storing dat...

Page 348: ...ed the progress 0 99 will be shown on the monitoring LED 301 End on the LED indicates successful completion of the data storage process It takes approximately five minutes for the data storage process to be completed Ending the data storage mode When done storing data disconnect the USB memory stick from the control board Press and hold SWP3 ENTER for approximately 10 seconds until End disappears ...

Page 349: ...ata collection 1 Set the switches on the control board by following the table shown above Switch setting SW6 10 ON SW4 817 2 Press SWP3 ENTER With each switch operation the setting can be alternately switched ON and OFF 3 After conducting step 1 check that the operating condition is stable Data collection start OFF Enabled Data collection end ON Disabled Setting procedure is now complete 3 Setting...

Page 350: ...rocess nor unit operation If an error occurs refer to 9 4 2 Troubleshooting After normal startup set the operation status of the air conditioning units to the original status USB memory sticks may become unusable due to unexpected damage or memory shortage It is recommended to take extra USB memory sticks to the site If only the OS is operated due to problems with the OC collect data also from the...

Page 351: ... the USB port CNUSB on the control board 4 Connect the portable battery charger to the XA connector CN601 for the PCB The power of the control board will turn on Wait for five seconds until the USB memory stick is recognized 5 Make sure the display Pro is shown on the maintenance LED LED301 This shows that Software Rewrite Mode has been started 2 Performing software rewriting 1 Wait for 5 seconds ...

Page 352: ...ortable battery charger to the LEAD WIRE ASSY USB and then to the control board Make sure the portable battery charger is sufficiently charged Rewrite error may occur if battery charge is insufficient Take care not to forget to remove the USB memory stick in step 3 2 or forget to turn off SW7 9 in step 3 3 9 3 2 Rewriting Software If these precautions are not taken the system may not start normall...

Page 353: ...y stick is active Storage is en abled See Section 9 4 2 Troubleshooting 1 1 and 1 2 2 Storage in progress 0 to 99 is displayed Status of the data storage to the USB memory stick is shown by the progress rate 3 Storage completed END The storage process has been completed successfully 4 Error USB memory side Er01 The storage process cannot be started due to failure of the USB memory stick See Sectio...

Page 354: ...ting is neces sary Data collection will be resumed automatically See Sec tion 9 4 2 Troubleshooting 2 1 7 Collection suspended OFF Collection of operation data is suspended 8 Flash memory error F Er Collection of operation data is suspended due to failure in the flash memory used to store opera tion data It may be necessary to change the board See Section 9 4 2 Troubleshooting 2 2 9 Error Err Erro...

Page 355: ...leted END Software rewrite has been completed successfully 13 Error USB memory side Er01 Software rewrite process cannot be started due to failure of the USB memory stick See Section 9 4 2 Troubleshooting 3 4 Er02 Software rewrite was stopped due to failure of the USB memory stick during the software rewrite process See Section 9 4 2 Troubleshooting 3 5 14 Error control board side Er10 Software re...

Page 356: ...e was a problem regarding the USB memory before the start of data storage data storage has not been com pleted Error Er01 occurs when SWP3 on the control board is pressed to rewrite the software immediately after power is supplied to the USB connected control board When the software rewriting is started before the control board recognizes the USB memory stick Solution Check the connection of the U...

Page 357: ...in the data storage mode by following either of the two methods 1 or 2 the control board may be malfunctioning 2 Collecting operation data 1 Maintenance LED displays blinking ON Meaning or Cause Despite data collection function being enabled it is not started yet There may be two causes Firstly the initialization process immediately after the system startup may have inhibited the start of data col...

Page 358: ...ing the procedure detailed in 1 1 Starting software rewrite mode under Section 9 3 2 Rewriting Software If the problem persists rewrite the software using a ROM writer 4 Maintenance LED displays Er01 Meaning or Cause Because an error occurred in the USB memory stick before the start of software rewrite software rewrite has not been com pleted Error Er01 occurs when SWP3 on the control board is pre...

Page 359: ...B memory stick If no problems are found follow the procedure starting with the step explained in 1 Operation procedure 1 Starting software rewrite mode under 9 3 2 Rewriting Software 6 Maintenance LED displays Er10 or Er11 Meaning or Cause Because there was a problem in the control board during the software rewrite process software rewrite has not been com pleted Solution Try rewriting the softwar...

Page 360: ...pter 10 LED Status Indicators on the Outdoor Unit Circuit Board 10 1 LED Status Indicators 1 10 1 1 How to Read the LED 1 10 1 2 Initial LED Display 2 10 1 3 Clock Memory Function 3 10 2 LED Status Indicators Table 4 ...

Page 361: ...HWE18220_GB ...

Page 362: ...other types of information Pressure and temperature are examples of numerical values and operating conditions and the on off status of solenoid valve are examples of flag display In the example above 1 through 9 are set to ON and 10 is set to OFF 1 Display of numerical values Example When the pressure data sensor reads 18 8kg cm2 Item No 58 The unit of pressure is in kg cm2 Use the following conve...

Page 363: ...aking the switch setting that corresponds to No 517 in the LED display table Only item No 1 Software Version appears on the display if there is a wiring failure between the control board and the trans mission line power supply board or if the circuit board has failed LED may not light up at all No Item Display Remarks 1 Software version 0103 Version 1 03 2 Refrigerant type 410 R410A 3 Model and ca...

Page 364: ...indoor unit is turned off When the power is turned off and then on again the count will resume from the time before the power was turned off Thus the time that differs the actual time will be displayed This also applies when a power failure occurs The system controller such as AG 150A adjusts the time once a day When the system controller is connected the time will be automatically updated to the ...

Page 365: ...10000000 Relay output display 4 Top Optional 200 V output CH21 A A Bottom 7 1110000000 Special control Retry operation Emergency op eration Communication error between the OC and OS Communication error 3 minute restart delay mode B B 9 1001000000 Communication demand ca pacity 0000 to 9999 B B If not demanded controlled appears on the display 10 0101000000 Contact point demand capac ity 0000 to 99...

Page 366: ...7 Unit No 8 B Lit when thermostat is on Unlit when thermostat is off Bottom Unit No 9 Unit No 10 Unit No 11 Unit No 12 Unit No 13 Unit No 14 Unit No 15 Unit No 16 25 1001100000 Top Unit No 17 Unit No 18 Unit No 19 Unit No 20 Unit No 21 Unit No 22 Unit No 23 Unit No 24 Bottom Unit No 25 Unit No 26 Unit No 27 Unit No 28 Unit No 29 Unit No 30 Unit No 31 Unit No 32 26 0101100000 Top Unit No 33 Unit No...

Page 367: ... Number of times error oc curred during crankcase heating by compressor motor 0000 to 9999 A A Number of times INV error oc curred during IH crankcase heating by compressor motor 93 1011101000 All AK OC OS 0000 to 9999 B 94 0111101000 AK 0000 to 9999 A A 95 1111101000 FAN1 0000 to 9999 A A Fan output 96 0000011000 Fan inverter output rpm FAN1 0000 to 9999 A A rpm 97 1000011000 FAN2 0000 to 9999 A ...

Page 368: ...1 1010110100 Error details of inverter Error details of inverter 0001 0120 A A 182 0110110100 Error history 3 0000 to 9999 B B 183 1110110100 Error details of inverter Error details of inverter 0001 0120 A A 184 0001110100 Error history 4 0000 to 9999 B B 185 1001110100 Error details of inverter Error details of inverter 0001 0120 A A 186 0101110100 Error history 5 0000 to 9999 B B 187 1101110100 ...

Page 369: ...ay 2 Top 21S4a CH11 SV1a SV2 A A Bottom 21S4b 213 1010101100 Relay output display 3 Top 21S4c Lit while power to the indoor units is being supplied A A Bottom 214 0110101100 Relay output display 4 Top Optional 200 V output CH21 A A Bottom 216 0001101100 TH4 99 9 to 999 9 A A The unit is C 217 1001101100 TH3 99 9 to 999 9 A A 218 0101101100 TH7 99 9 to 999 9 A A 219 1101101100 TH6 99 9 to 999 9 A A...

Page 370: ...t DC 00 0 to 999 9 A A Peak value A 282 0101100010 COMP bus voltage 00 0 to 999 9 A A The unit is V 283 1101100010 LEV2b 0000 to 9999 A A 284 0011100010 LEV2c 0000 to 9999 A A 285 1011100010 LEV2d 0000 to 9999 A A 286 0111100010 LEV9 0000 to 9999 A A 288 0000010010 COMP Operation time Upper 4 digits 0000 to 9999 A A The unit is h 289 1000010010 COMP Operation time Lower 4 digits 0000 to 9999 A A 2...

Page 371: ...dress capacity code 0000 to 9999 0000 to 9999 370 0100111010 IC20 Address capacity code 0000 to 9999 0000 to 9999 371 1100111010 IC21 Address capacity code 0000 to 9999 0000 to 9999 372 0010111010 IC22 Address capacity code 0000 to 9999 0000 to 9999 373 1010111010 IC23 Address capacity code 0000 to 9999 0000 to 9999 374 0110111010 IC24 Address capacity code 0000 to 9999 0000 to 9999 375 1110111010...

Page 372: ...on temperature 99 9 to 999 9 420 0010010110 IC13 Suction temperature 99 9 to 999 9 421 1010010110 IC14 Suction temperature 99 9 to 999 9 422 0110010110 IC15 Suction temperature 99 9 to 999 9 423 1110010110 IC16 Suction temperature 99 9 to 999 9 424 0001010110 IC17 Suction temperature 99 9 to 999 9 425 1001010110 IC18 Suction temperature 99 9 to 999 9 426 0101010110 IC19 Suction temperature 99 9 to...

Page 373: ...IC7 Liquid pipe temperature 99 9 to 999 9 465 1000101110 IC8 Liquid pipe temperature 99 9 to 999 9 466 0100101110 IC9 Liquid pipe temperature 99 9 to 999 9 467 1100101110 IC10 Liquid pipe temperature 99 9 to 999 9 468 0010101110 IC11 Liquid pipe temperature 99 9 to 999 9 469 1010101110 IC12 Liquid pipe temperature 99 9 to 999 9 470 0110101110 IC13 Liquid pipe temperature 99 9 to 999 9 471 11101011...

Page 374: ...Liquid pipe temperature 99 9 to 999 9 497 1000111110 IC40 Liquid pipe temperature 99 9 to 999 9 498 0100111110 IC41 Liquid pipe temperature 99 9 to 999 9 499 1100111110 IC42 Liquid pipe temperature 99 9 to 999 9 500 0010111110 IC43 Liquid pipe temperature 99 9 to 999 9 501 1010111110 IC44 Liquid pipe temperature 99 9 to 999 9 502 0110111110 IC45 Liquid pipe temperature 99 9 to 999 9 503 1110111110...

Page 375: ...unt up display of number of connected units B 514 0100000001 RC address Count up display of number of connected units B 515 1100000001 BC BS TU address Count up display of number of connected units 516 0010000001 OS address Count up display of number of connected units B 517 1010000001 Version Capacity S W version ĺ Refrigerant type ĺ Model and capacity ĺ Communication address A A 518 0110000001 O...

Page 376: ...99 9 541 1011100001 IC19 Gas pipe temperature 99 9 to 999 9 542 0111100001 IC20 Gas pipe temperature 99 9 to 999 9 543 1111100001 IC21 Gas pipe temperature 99 9 to 999 9 544 0000010001 IC22 Gas pipe temperature 99 9 to 999 9 545 1000010001 IC23 Gas pipe temperature 99 9 to 999 9 546 0100010001 IC24 Gas pipe temperature 99 9 to 999 9 547 1100010001 IC25 Gas pipe temperature 99 9 to 999 9 548 001001...

Page 377: ...001001 IC11SH 99 9 to 999 9 584 0001001001 IC12SH 99 9 to 999 9 585 1001001001 IC13SH 99 9 to 999 9 586 0101001001 IC14SH 99 9 to 999 9 587 1101001001 IC15SH 99 9 to 999 9 588 0011001001 IC16SH 99 9 to 999 9 589 1011001001 IC17SH 99 9 to 999 9 590 0111001001 IC18SH 99 9 to 999 9 591 1111001001 IC19SH 99 9 to 999 9 592 0000101001 IC20SH 99 9 to 999 9 593 1000101001 IC21SH 99 9 to 999 9 594 01001010...

Page 378: ...111001 IC6SC 99 9 to 999 9 629 1010111001 IC7SC 99 9 to 999 9 630 0110111001 IC8SC 99 9 to 999 9 631 1110111001 IC9SC 99 9 to 999 9 632 0001111001 IC10SC 99 9 to 999 9 633 1001111001 IC11SC 99 9 to 999 9 634 0101111001 IC12SC 99 9 to 999 9 635 1101111001 IC13SC 99 9 to 999 9 636 0011111001 IC14SC 99 9 to 999 9 637 1011111001 IC15SC 99 9 to 999 9 638 0111111001 IC16SC 99 9 to 999 9 639 1111111001 I...

Page 379: ...9 661 1010100101 IC39SC 99 9 to 999 9 662 0110100101 IC40SC 99 9 to 999 9 663 1110100101 IC41SC 99 9 to 999 9 664 0001100101 IC42SC 99 9 to 999 9 665 1001100101 IC43SC 99 9 to 999 9 666 0101100101 IC44SC 99 9 to 999 9 667 1101100101 IC45SC 99 9 to 999 9 668 0011100101 IC46SC 99 9 to 999 9 669 1011100101 IC47SC 99 9 to 999 9 670 0111100101 IC48SC 99 9 to 999 9 671 1111100101 IC49SC 99 9 to 999 9 67...

Page 380: ...o 31 Year and month and date alter nate display 698 0101110101 Time of error detection 5 00 00 to 23 59 Hour minute 699 1101110101 Time of error detection 5 2 00 00 to 99 12 1 to 31 Year and month and date alter nate display 700 0011110101 Time of error detection 6 00 00 to 23 59 Hour minute 701 1011110101 Time of error detection 6 2 00 00 to 99 12 1 to 31 Year and month and date alter nate displa...

Page 381: ...01101 IC18 LEV opening 0000 to 9999 732 0011101101 IC19 LEV opening 0000 to 9999 733 1011101101 IC20 LEV opening 0000 to 9999 734 0111101101 IC21 LEV opening 0000 to 9999 735 1111101101 IC22 LEV opening 0000 to 9999 736 0000011101 IC23 LEV opening 0000 to 9999 737 1000011101 IC24 LEV opening 0000 to 9999 738 0100011101 IC25 LEV opening 0000 to 9999 739 1100011101 IC26 LEV opening 0000 to 9999 740 ...

Page 382: ...C10 Operation mode 774 0110000011 IC11 Operation mode 775 1110000011 IC12 Operation mode 776 0001000011 IC13 Operation mode 777 1001000011 IC14 Operation mode 778 0101000011 IC15 Operation mode 779 1101000011 IC16 Operation mode 780 0011000011 IC17 Operation mode 781 1011000011 IC18 Operation mode 782 0111000011 IC19 Operation mode 783 1111000011 IC20 Operation mode 784 0000100011 IC21 Operation m...

Page 383: ...ter 0000 to 9999 818 0100110011 IC5 filter 0000 to 9999 819 1100110011 IC6 filter 0000 to 9999 820 0010110011 IC7 filter 0000 to 9999 821 1010110011 IC8 filter 0000 to 9999 822 0110110011 IC9 filter 0000 to 9999 823 1110110011 IC10 filter 0000 to 9999 824 0001110011 IC11 filter 0000 to 9999 825 1001110011 IC12 filter 0000 to 9999 826 0101110011 IC13 filter 0000 to 9999 827 1101110011 IC14 filter 0...

Page 384: ...o 9999 851 1100101011 IC38 filter 0000 to 9999 852 0010101011 IC39 filter 0000 to 9999 853 1010101011 IC40 filter 0000 to 9999 854 0110101011 IC41 filter 0000 to 9999 855 1110101011 IC42 filter 0000 to 9999 856 0001101011 IC43 filter 0000 to 9999 857 1001101011 IC44 filter 0000 to 9999 858 0101101011 IC45 filter 0000 to 9999 859 1101101011 IC46 filter 0000 to 9999 860 0011101011 IC47 filter 0000 t...

Page 385: ...ffective val ue 1 99 9 to 999 9 A A 873 1001011011 Power factor phase angle 1 99 9 to 999 9 A A The unit is deg 880 0000111011 Control board Reset counter 0 to 254 A A The unit is time 881 1000111011 INV board Reset counter 0 to 254 A A 884 0010111011 Fan board address 5 reset counter 0 to 254 A A The unit is time 885 1010111011 Fan board address 6 reset counter 0 to 254 A A 980 0010101111 M NET p...

Page 386: ...035 1101000000 1036 0011000000 1037 1011000000 1038 0111000000 1039 1111000000 1040 0000100000 1041 1000100000 1042 0100100000 1043 1100100000 1044 0010100000 1045 1010100000 1046 0110100000 1047 1110100000 1048 0001100000 1049 1001100000 1050 0101100000 1051 1101100000 1052 0011100000 1053 1011100000 1054 0111100000 1055 1111100000 1056 0000010000 1057 1000010000 1058 0100010000 1059 1100010000 1...

Page 387: ...85 1011110000 1086 0111110000 1087 1111110000 1088 0000001000 1089 1000001000 1090 0100001000 1091 1100001000 1092 0010001000 1093 1010001000 1094 0110001000 1095 1110001000 1096 0001001000 1097 1001001000 1098 0101001000 1099 1101001000 1100 0011001000 1101 1011001000 1102 0111001000 1103 1111001000 1104 0000101000 1105 1000101000 1106 0100101000 1107 1100101000 1108 0010101000 Current data No SW...

Page 388: ...28 0001011000 1129 1001011000 1130 0101011000 1131 1101011000 1132 0011011000 1133 1011011000 1134 0111011000 1135 1111011000 1136 0000111000 1137 1000111000 1138 0100111000 1139 1100111000 1140 0010111000 1141 1010111000 1142 0110111000 1143 1110111000 1144 0001111000 1145 1001111000 1146 0101111000 1147 1101111000 1148 0011111000 1149 1011111000 1150 0111111000 1151 1111111000 Current data No SW...

Page 389: ...B11 SVC11 SVA12 SVB12 SVC12 1161 1001000100 SVA13 SVB13 SVC13 SVA14 SVB14 SVC14 B SVA15 SVB15 SVC15 SVA16 SVB16 SVC16 1162 0101000100 B 1163 1101000100 Relay output display BC Sub2 SVA1 SVB1 SVC1 SVA2 SVB2 SVC2 B SVA3 SVB3 SVC3 SVA4 SVB4 SVC4 1164 0011000100 SVA5 SVB5 SVC5 SVA6 SVB6 SVC6 B SVA7 SVB7 SVC7 SVA8 SVB8 SVC8 1165 1011000100 SVA9 SVB9 SVC9 SVA10 SVB10 SVC10 B SVA11 SVB11 SVC11 SVA12 SVB1...

Page 390: ...Relay output display BC Sub6 SVA1 SVB1 SVC1 SVA2 SVB2 SVC2 B SVA3 SVB3 SVC3 SVA4 SVB4 SVC4 1184 0000010100 SVA5 SVB5 SVC5 SVA6 SVB6 SVC6 B SVA7 SVB7 SVC7 SVA8 SVB8 SVC8 1185 1000010100 SVA9 SVB9 SVC9 SVA10 SVB10 SVC10 B SVA11 SVB11 SVC11 SVA12 SVB12 SVC12 1186 0100010100 SVA13 SVB13 SVC13 SVA14 SVB14 SVC14 B SVA15 SVB15 SVC15 SVA16 SVB16 SVC16 1187 1100010100 B 1188 0010010100 Relay output display...

Page 391: ...100 SVA5 SVB5 SVC5 SVA6 SVB6 SVC6 B SVA7 SVB7 SVC7 SVA8 SVB8 SVC8 1205 1010110100 SVA9 SVB9 SVC9 SVA10 SVB10 SVC10 B SVA11 SVB11 SVC11 SVA12 SVB12 SVC12 1206 0110110100 SVA13 SVB13 SVC13 SVA14 SVB14 SVC14 B SVA15 SVB15 SVC15 SVA16 SVB16 SVC16 1207 1110110100 B 1208 0001110100 Relay output display BC Sub11 SVA1 SVB1 SVC1 SVA2 SVB2 SVC2 B SVA3 SVB3 SVC3 SVA4 SVB4 SVC4 1209 1001110100 SVA5 SVB5 SVC5 ...

Page 392: ...S3 99 9 to 999 9 B 1236 0010101100 BC Sub1 LEV3 0000 to 9999 B LEV3 opening 1237 1010101100 B 1238 0110101100 B 1239 1110101100 BC Sub2 TH12 99 9 to 999 9 B 1240 0001101100 BC Sub2 TH15 99 9 to 999 9 B 1241 1001101100 BC Sub2 TH16 99 9 to 999 9 B 1242 0101101100 1243 1101101100 BC Sub2 PS3 99 9 to 999 9 B 1244 0011101100 BC Sub2 LEV3 0000 to 9999 B LEV3 opening 1245 1011101100 B 1246 0111101100 B ...

Page 393: ... BC Sub7 TH15 99 9 to 999 9 B 1281 1000000010 BC Sub7 TH16 99 9 to 999 9 B 1282 0100000010 1283 1100000010 BC Sub7 PS3 99 9 to 999 9 B 1284 0010000010 BC Sub7 LEV3 0000 to 9999 B LEV3 opening 1285 1010000010 B 1286 0110000010 B 1287 1110000010 BC Sub8 TH12 99 9 to 999 9 B 1288 0001000010 BC Sub8 TH15 99 9 to 999 9 B 1289 1001000010 BC Sub8 TH16 99 9 to 999 9 B 1290 0101000010 1291 1101000010 BC Su...

Page 394: ...g 1309 1011100010 B 1310 0111100010 B 1311 1111100010 BC Sub11 TH12 99 9 to 999 9 B 1312 0000010010 BC Sub11 TH15 99 9 to 999 9 B 1313 1000010010 BC Sub11 TH16 99 9 to 999 9 B 1314 0100010010 1315 1100010010 BC Sub11 PS3 99 9 to 999 9 B 1316 0010010010 BC Sub11 LEV3 0000 to 9999 B LEV3 opening 1317 1010010010 B 1318 0110010010 B Current data No SW4 SW6 9 ON SW6 10 OFF Item Display Unit A B 1 Remar...

Page 395: ...100001 1567 1111100001 BC Sub1 TH12 99 9 to 999 9 B 1568 0000010001 BC Sub1 TH15 99 9 to 999 9 B 1569 1000010001 BC Sub1 TH16 99 9 to 999 9 B 1570 0100010001 1571 1100010001 BC Sub1 PS3 99 9 to 999 9 B 1572 0010010001 BC Sub1 LEV3 0000 to 9999 B LEV3 opening 1573 1010010001 1574 0110010001 1575 1110010001 BC Sub2 TH12 99 9 to 999 9 B 1576 0001010001 BC Sub2 TH15 99 9 to 999 9 B 1577 1001010001 BC ...

Page 396: ...01001 BC Sub6 LEV3 0000 to 9999 B LEV3 opening 1613 1011001001 1614 0111001001 1615 1111001001 BC Sub7 TH12 99 9 to 999 9 B 1616 0000101001 BC Sub7 TH15 99 9 to 999 9 B 1617 1000101001 BC Sub7 TH16 99 9 to 999 9 B 1618 0100101001 1619 1100101001 BC Sub7 PS3 99 9 to 999 9 B 1620 0010101001 BC Sub7 LEV3 0000 to 9999 B LEV3 opening 1621 1010101001 1622 0110101001 1623 1110101001 BC Sub8 TH12 99 9 to ...

Page 397: ...9 B 1644 0011011001 BC Sub10 LEV3 0000 to 9999 B LEV3 opening 1645 1011011001 1646 0111011001 1647 1111011001 BC Sub11 TH12 99 9 to 999 9 B 1648 0000111001 BC Sub11 TH15 99 9 to 999 9 B 1649 1000111001 BC Sub11 TH16 99 9 to 999 9 B 1650 0100111001 1651 1100111001 BC Sub11 PS3 99 9 to 999 9 B 1652 0010111001 BC Sub11 LEV3 0000 to 9999 B LEV3 opening 1653 1010111001 1654 0110111001 1655 1110111001 D...

Page 398: ......

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